2022 chemical automation control instrument examination questions and online simulation examination

Source of question bank ： Safety production simulation test, a little public official account.

2022 The question bank of chemical automation control instrument is the question bank of theoretical knowledge examination of chemical automation control instrument simulation examination ！2022 The examination questions and online simulation examination of chemical automation control instruments in are based on the latest textbook compilation of chemical automation control instruments . Chemical automation control instrument test paper has passed the one-point learning progress analysis of safety production simulation examination .

1、【 Single topic selection 】CENTUMCS3000 In the system ,PV yes ().（  B  ）

A、 Given value

B、 Measured value

C、 Output value

2、【 Single topic selection 】CENTUMCS3000 In the system , The alarm status of a circuit is displayed as LL, It can be seen that the circuit has () Call the police .（  C  ）

A、MV Value low low

B、SV Value low low

C、PV Value low low

3、【 Single topic selection 】HART The communication mode of the protocol is () communication mode .（  B  ）

A、 simulation

B、 simulation 、 Digital mix

C、 Numbers

4、【 Single topic selection 】MYT40 type 1211 The fire range of the fire extinguisher is ()m.（  A  ）

A、3-5

B、7-8

C、8-9

5、【 Single topic selection 】 The flow modes of three-way regulating valve are ().（  A  ）

A、 Confluence and diversion

B、 Gas on and gas off

C、 Positive and negative effects

6、【 Single topic selection 】 In the following options , What will cause material leakage is ().（  C  ）

A、 The pressure of the material is high

B、 The temperature of the material is high

C、 Pipeline corrosion

7、【 Single topic selection 】 What is correct in the following description of cascade control loop is ().（  B  ）

A、 Lord 、 The auxiliary controller works in series , The output of the main controller directly controls the control valve

B、 Lord 、 Double closed-loop negative feedback control system with secondary controllers connected in series

C、 Lord 、 The auxiliary controller works in series , Realize the fixed value control of auxiliary variables

8、【 Single topic selection 】 In the following options () Not the technical specification of solenoid valve .（  B  ）

A、 Operating temperature of medium

B、 Medium density

C、 Circulation capacity

9、【 Single topic selection 】 The cascade control system has a certain adaptive ability and can be used in situations where the load and operating conditions change greatly , Is due to the increase of ().（  B  ）

A、 The main object

B、 Secondary circuit

C、 Main circuit

10、【 Single topic selection 】 To suit different working temperatures and sealing requirements , The valve cover on the regulating valve is provided with () A common structural form .（  A  ）

A、4

B、3

C、5

11、【 Single topic selection 】 Turn down the shut-off valve connected in series with the regulating valve , It will change the adjustable ratio and flow characteristics ().（  C  ）

A、 Small , good

B、 Big , Bad

C、 Small , Bad

12、【 Single topic selection 】 Process and production requirements for pressure gauge type selection , It's pressure measurement (), The level of the measured pressure ( measuring range 、 Instrument range ), Additional devices ( Whether there is an alarm ), Display mode ( Local indication 、 The signal is far away 、 Centralized display ) etc. .（  A  ）

A、 Accuracy class

B、 Relative error

C、 stability

13、【 Single topic selection 】 In the insulation below , Which type has the highest temperature resistance ().（  B  ）

A、 glass tube

B、 Pure aluminum oxide tube

C、 Quartz tube

14、【 Single topic selection 】 Cold stamping dies often bear tension in work 、 Compress 、 bending 、 impact 、 Friction and other mechanical forces , Thus, adhesion occurs 、 deformation 、() Etc .（  B  ）

A、 crack 、 corrosion 、 abrasion 、 Soften

B、 crack 、 abrasion 、 Gnawing 、 Soften

C、 Hot and cold fatigue 、 corrosion 、 abrasion 、 Soften

D、 Hot and cold fatigue 、 crack 、 corrosion 、 Gnawing

15、【 Single topic selection 】 Appetite is caused by （） The excitement caused .（  C  ）

A、 The story

B、 Teachers'

C、 food

D、 music

16、【 Single topic selection 】 The size of the drawing die gap should be based on the material thickness 、 Drawing times 、( ) And the accuracy of parts and products .（  C  ）

A、 Die fillet radius

B、 Punch fillet radius

C、 Drawing properties

D、 Drawing force

17、【 Single topic selection 】 When reaming with taper reamer , Full tooth cutting ( ).（  B  ）

A、 More time-consuming

B、 Time saving

C、 It's more laborious

D、 Less effort

18、【 Single topic selection 】 At the production site , The main items of pneumatic control valve adjustment do not include ().（  B  ）

A、 Basic error

B、 Tightness of stuffing box

C、 Return difference

19、【 Single topic selection 】 Oil heating pre ripening is the use of () Characteristics of , Dehydrate food 、 Color 、 Fragrance enhancement 、 Method of embrittlement .（  B  ）

A、 High oil temperature

B、 Oil medium

C、 Greasy

D、 Light oil

20、【 Single topic selection 】 In the common faults of progressive die ,() It is not in the form of die damage .（  C  ）

A、 Mold cracking

B、 The die opens

C、 The workpiece is crushed

D、 The punch is broken

21、【 Single topic selection 】() Can promote deciduous teeth 、 Jawbone 、 The development of facial muscles .（  C  ）

A、 Eat delicate food

B、 Drink milk

C、 Eat rough food

D、 have some sweets

22、【 Single topic selection 】 In order to reduce processing heat and axial force during drilling 、 The main measures to improve the centering accuracy are ().（  C  ）

A、 Grinding back corners and grinding cross edges

B、 Sharpen the horizontal edge

C、 Grinding the top angle and the transverse edge

D、 Grind the back corner

23、【 Single topic selection 】 About car ammeter , A said the ammeter indicated “-” Discharge the battery . B said the ammeter indicated “+” Charge the battery for the generator . You think the above view ().（  C  ）

A、 A correct

B、 B right

C、 Both are correct

D、 Neither a nor B is correct

24、【 Single topic selection 】 Sheep's back meat is characterized by tender meat , The flesh is ruddy , Belong to () mutton .（  D  ）

A、 Level Four

B、 Level three

C、 second level

D、 Class A

25、【 Single topic selection 】 Grinding the transverse edge can shorten the transverse edge to the length of the original transverse edge ()（  C  ）

A、0～1/3

B、1/3～1/5

C、1/3～1/2

D、42737

26、【 Single topic selection 】 On the relationship between vehicle braking deviation and braking sideslip , It's true that （）.（  C  ）

A、 Braking deviation will not cause braking sideslip

B、 Braking sideslip will not cause braking deviation

C、 Serious braking deviation will cause braking sideslip

D、 The two are conceptually consistent

27、【 Single topic selection 】 In a uniform magnetic field , When the magnetic flux passing through a plane is the maximum , This plane is the same as the magnetic induction line ().（  B  ）

A、 parallel

B、 vertical

C、 Skew intersection

D、 Anywhere

28、【 Single topic selection 】 At Siemens S7 series PLC in ,() Constitute the S7CPU Interface with user program .（  B  ）

A、FC

B、OB

C、FB

29、【 Single topic selection 】 From the effect of eating, beets should be in () On the table .（  C  ）

A、 At the beginning of the banquet

B、 During the banquet

C、 The last stage of the banquet

D、 After the banquet

30、【 Single topic selection 】( ) Is one of the three most basic elements of etiquette .（  D  ）

A、 Meter

B、 major

C、 Quality

D、 dress

31、【 Single topic selection 】 The greater the pH of the solution ,' Security production Mock exam A little ' The bigger the value is. .（  B  ）

A、pg

B、pH

C、ppt

D、ppm

32、【 Single topic selection 】 For Siemens S7-301 series PLC System ,CPU Indicator light on the module () Light indicates that the forced operation is valid .（  C  ）

A、SF

B、RUN

C、FRCE

33、【 Single topic selection 】 Small spoon 、 Pincers 、 Funnels and other tools are () Toys and materials .（  C  ）

A、 Symbolic games

B、 Constructive game

C、 Exploration activities

D、 Language activities

34、【 Single topic selection 】 The flow coefficient of engineering unit system is () Express . Defined as :5~400℃ Of water , The differential pressure at both ends of the valve is 1Kgf/c㎡, The number of cubic meters per hour flowing through the regulating valve when fully open .（  A  ）

A、C

B、Kv

C、Cv

35、【 Single topic selection 】 The elastic element is directly felt in the elastic pressure gauge () Variable pressure sensitive element .（  C  ）

A、 Force

B、 pressure

C、 Measured pressure

36、【 Single topic selection 】 The following natural pigments are .（  D  ）

A、 Amaranth

B、 Carmine

C、 Indigo

D、 caramel

37、【 Single topic selection 】 The strict requirements for grounding in intrinsically safe instrument system are ().（  B  ）

A、 Barrier

B、 Zener safety barrier

C、 Resistive safety barrier

38、【 Single topic selection 】 During on-board test of generator , Start the engine , Keep the engine running .（  D  ）

A、800 turn / branch

B、1000 turn / branch

C、1500 turn / branch

D、2000 turn / branch

39、【 Single topic selection 】 Irrigation of vegetable fields with human and animal excrement can seriously pollute vegetables ().（  A  ）

A、 Parasite eggs

B、 Nitrite

C、 Nitrate

D、 Organochlorine

40、【 Single topic selection 】 The display instrument of thermal resistance indicates a negative value , Please analyze the possible causes of the fault ().（  B  ）

A、 The thermoelectric circuit is blocked

B、 Thermal resistance short circuit

C、 The outgoing line is open

41、【 Single topic selection 】 The components of the transmission are used for installation 、 It is important to protect gear transmission and store lubricating oil ().（  A  ）

A、 Shell

B、 synchronizer

C、 Gear transmission mechanism

D、 Control mechanism

42、【 Single topic selection 】 Method for determining the direction of action of regulator in a simple control system : The positive effect is ().（  A  ）

A、 As the measured signal increases, so does the output signal

B、 When the measured variable increases, its output value decreases

C、 When the measured variable decreases, its output value also increases

43、【 Single topic selection 】 Benzene is a plane () Carbon ring , The carbon atoms on the ring are arranged alternately by single and double bonds .（  B  ）

A、 four yuan

B、 Six yuan

C、 Five yuan

44、【 Single topic selection 】 The physical quantity that measures the magnitude of the current is called ().（  A  ）

A、 Current intensity

B、 Power Supply

C、 resistance

45、【 Single topic selection 】 Small flow resistance is required , No leakage 、 The regulating valve for highly corrosive medium is ().（  A  ）

A、 Diaphragm valve

B、 Butterfly valve

C、 Eccentric rotary valve

46、【 Single topic selection 】 If the ruler frame of the micrometer is deformed , It will cause the axis of the measuring rod and the measuring surface of the fixed anvil （）.（  B  ）

A、 Not parallel

B、 It's not vertical

C、 Different axes

D、 beating

47、【 Single topic selection 】 After the moving parts of the machine tool are displaced , When positioning any two times at a certain shift point , The maximum algebraic difference of the actual difference of the reading is （）.（  A  ）

A、 Positioning measurement error

B、 Clamping measurement error

C、 Work measurement error

D、 Motion measurement error

48、【 Single topic selection 】 Common dish pricing methods include “ fluctuate in line with market conditions ” Law 、 Gross margin method and ().（  D  ）

A、 Loss rate method

B、 Net material rate method

C、 Comprehensive analysis of quantity, cost and profit

D、 Coefficient pricing method

49、【 Single topic selection 】 The connection between the young and the young should run through () Instead of pre-school assault training .（  A  ）

A、 Throughout early childhood

B、 The second semester of big class

C、 interim

D、 Big class

50、【 Single topic selection 】 The maximum difference between positive and negative strokes measured by the regulating valve on the same input number is ().（  A  ）

A、 Return difference of regulating valve

B、 Basic error of regulating valve

C、 Rated stroke deviation

51、【 Single topic selection 】 Morality is the basis of human social life ()、 Traditional habits and inner beliefs , Consciousness based on the evaluation of good and evil 、 standard 、 Sum of actions and activities .（  C  ）

A、 traditional virtues

B、 Value system

C、 Public opinion

D、 Social relations

52、【 Single topic selection 】 Making apple rolls 、 In Almond chip biscuits , Butter is used () Add the product after the processing method .（  B  ）

A、 Squeeze

B、 Dissolve

C、 Scrape the ball

D、 section

53、【 Single topic selection 】 Garlic flavored pork ribs are generally changed into () Section of .（  D  ）

A、2 Cm long

B、3 Cm long

C、4 Cm long

D、6 Cm long

54、【 Single topic selection 】 What does not belong to the net material type is ().（  A  ）

A、 Wool

B、 Raw meal

C、 Partially Prepared Products

D、 finished product

55、【 Single topic selection 】 The main reason for the short service life of the high-pressure regulating valve is the poor service life ().（  C  ）

A、 erosion

B、 corrosion

C、 cavitation

56、【 Judgment questions 】() Japan , Security raw Production simulation test 1 Diantong , The dietary pattern is “ Three high and one low ” type .（  ×  ）

57、【 Judgment questions 】 After fixture assembly , Check whether the mutual position accuracy and positioning size of each element are qualified .（  ×  ）

58、【 Judgment questions 】 When the pressure gauge is used to measure steam pressure , In order to prevent high-temperature steam from contacting the test pressure parts , Measures of adding condensate pipes cannot be adopted .（  ×  ）

59、【 Judgment questions 】() The index to measure the quality of automobile air conditioning , Mainly air volume 、 temperature 、 Pressure and cleanliness .（  ×  ）

60、【 Judgment questions 】 When brewing oolong tea, the water temperature is required to be 95℃--100℃.（  √  ）

61、【 Judgment questions 】() In the fixation of food raw materials , Animal raw materials are mostly red to gray .（  √  ）

62、【 Judgment questions 】 In cascade control system , The original choice is 20、 Security Production simulation Examination Try a little 、mm Pneumatic opening valve , Later, the caliber was changed to 32mm Air shut-off valve for , At this time, it is necessary to modify the positive and negative effects of the main and auxiliary controllers .（  ×  ）

63、【 Judgment questions 】 The error of the instrument used in the production device or control system is only additional error .（  ×  ）

64、【 Judgment questions 】 Jun kiln is produced in Yu County, Henan Province .（  √  ）

65、【 Judgment questions 】 In centrifugal separation operation , The centrifugal force has no effect on the separation effect .（  ×  ）

66、【 Judgment questions 】 The drawing of low carbon steel can be divided into elastic deformation stage , elastic － Plastic deformation stage , Fracture stage .（  √  ）

67、【 Judgment questions 】() In the technology of fruit and vegetable dough , Due to the different water content of main raw materials , Therefore, the proportion of powder is also different .（  √  ）

68、【 Judgment questions 】() In the application of multi parting surface cavity mold , The fitting length of the slider is usually less than the width 1.5 times .（  ×  ）

69、【 Judgment questions 】 The important function of installing the valve positioner is to eliminate the instability of the actuator membrane and spring , And the dry friction effect of each movable part , So as to improve the precise positioning and reliability of the regulating valve .（  √  ）

70、【 Judgment questions 】 The impulse pipe shall be measured according to the requirements of different media l∶10~1∶100 Laying on the slope of .（  √  ）

71、【 Judgment questions 】() Hot cooking refers to the process of boiling raw materials in boiling water and then taking them out , Eat without flavoring or seasoning .（  ×  ）

72、【 Judgment questions 】 When closing the injection mold after installation , dynamic 、 There shall be no gap between the fixed die pressing plate .（  ×  ）

73、【 Judgment questions 】 The amplification factor of the interference channel shall be as small as possible , The time constant should be as large as possible , The interference action point shall be as close to the regulating valve as possible , Reduce the capacity lag of object interference channel .（  ×  ）

74、【 Judgment questions 】 The highest temperature that causes flashover is called point .（  ×  ）

75、【 Judgment questions 】 Cut with cold dishes , The knife should be transported with strength 、 Be steady 、 accurate 、 fast .（  ×  ）

76、【 Judgment questions 】 When the diameter of the control valve is certain , And both ends ‘ Ann Whole life Production simulation test Try a little ‘ When the differential pressure is constant , Then the flow will not change .（  ×  ）

77、【 Judgment questions 】 The double or triple setting of fault detection element is to prevent interlocking shutdown due to misoperation of detection element .（  √  ）

78、【 Judgment questions 】 When grinding cylindrical holes , If there is too much abrasive extrusion at both ends of the workpiece , If it is not wiped off in time, the orifice will expand （  √  ）

79、【 Judgment questions 】 Thread micrometer is used to measure the major diameter of thread .（  ×  ）

80、【 Judgment questions 】 Group drill is to grind the horizontal edge on the fried dough twist drill to shorten the horizontal edge to the original 1/5～1/7.（  √  ）

81、【 Judgment questions 】 On the upstream end face of the standard orifice plate , The slope between the straight line connecting any two points and the plane perpendicular to the centerline shall be less than 3%.（  ×  ）

82、【 Judgment questions 】X8126 M-type universal tool milling machine is suitable for milling various inclined planes and drilling 、 Boring inclined holes, etc .（  √  ）

83、【 Judgment questions 】() For vehicles that allow the coupling of trailers , Its parking brake device must be able to make the vehicle and train stop on the slope when under full load 12％ On the ramp .（  √  ）

84、【 Judgment questions 】() Vacuum leakage of intake pipe 、 Unstable operation of the fuel injector can cause poor acceleration of the electronically controlled engine .（  √  ）

85、【 Judgment questions 】 Elliptical gear flowmeter is a positive displacement flowmeter , Used to measure various fluids 、 It is especially suitable for measuring the flow of high viscosity fluid . Elliptical gear flowmeter is a positive displacement flowmeter , Used to measure various fluids 、 It is especially suitable for measuring the flow of highly viscous fluid .（  √  ）

86、【 Judgment questions 】() Black marks appear on the belly of the crab when the crab decays .（  √  ）

87、【 Judgment questions 】 Modular programming is to divide a program into several program blocks , Each program block contains logical instructions for some devices and tasks “ Security Production mould I'm going to take the exam a little through “.（  √  ）

88、【 Judgment questions 】()YYW-300 The plane separation knob of the model dynamic balancing machine is set with A、B、C The scale units of the three knobs must be the same .（  √  ）

89、【 Judgment questions 】 The converter part of the electromagnetic flowmeter also needs to be well grounded , To avoid interference due to different potentials .（  ×  ）

90、【 Judgment questions 】 The pitch meter is a kind of measuring instrument for measuring the pitch error of gear by absolute measurement method （  ×  ）

91、【 Judgment questions 】 Fine and small pneumatic thin film actuator has high reliability 、 Small appearance 、 The characteristic of light weight （  √  ）

92、【 Judgment questions 】 Linear programming has a simple structure without branches , A simple program block contains all the instructions of the system , Linear programming is similar to hardwired relay logic .（  √  ）

93、【 Judgment questions 】 Degreasing shall be carried out in the outdoor ventilation place or in the room with ventilation device , Safety measures such as wearing protective articles shall be taken during work .（  √  ）

94、【 Judgment questions 】 The negative feedback of the automatic control system means that the value of the feedback signal through the measurement and transmission link is less than zero .（  ×  ）

95、【 Judgment questions 】 The reading measured by the gear base gauge , Is the actual base section of the gear （ ）（  √  ）

96、【 Judgment questions 】 The transition process of automatic control system refers to that the controlled variable deviates from the given value due to the influence of interference , And the process of approaching the given value through control .（  √  ）

97、【 Judgment questions 】 Frequency used by ultrasonic flowmeter : The frequency of measuring liquid is usually at 300KHz~500KHz.（  ×  ）

98、【 Judgment questions 】 In order to facilitate mass production, the rotameter manufacturer , When scaling , According to the actual situation of the user , Calibrate the instrument with water or air and provide the outlet .（  ×  ）

99、【 Judgment questions 】 The rotor of the rotameter is made of stainless steel 、 copper 、 aluminium alloy 、 organic glass 、 teflon 、 Made of plastic and other materials ; Select rotors of different materials and shapes according to the physicochemical properties and measuring range of the measured medium .（  √  ）

100、【 Judgment questions 】 Armored thermocouple is a thin-film thermocouple that evaporates two electrode materials on the insulating substrate by vacuum coating method .（  ×  ）

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