2022 Liaoning's latest eight members (Safety Officer) simulated test question bank and answers

The 100% question bank provides the examination questions for the safety officer of the eight members of the construction team 、 Prediction of the examination of the eight members of the construction team 、 The real exam questions of the eighth senior staff 、 Safety officer certificate examination question bank, etc , Provide online questions and brush questions , Online mock exam , Help you pass the exam easily .

 

370. The grounding resistance of DC welding machine shall not be greater than ()Ω

A.3

B.4

C.5

D.6

answer ：B

371. The secondary wire of electric welding shall be waterproof rubber sheathed copper core flexible cable , The cable length should not be greater than ()m.

A.20

B.30

C.40

D.50

answer ：B

372. The burned area of the positive and negative electrode contact surface of the working device of the reinforcement butt welding machine shall not exceed ().

A.1/2

B.1/3

C.2/3

D.3/4

answer ：C

373. The traveling clearance between the clamp screw and nut of the working device of the rebar butt welding machine shall not be greater than ()mm,

A.0.2

B.0.3

C.0.4

D.0.5

answer ：C

374. The wear of nuts in the working device of steel bar butt welding machine shall not exceed... Of the thread height ().

A.20%

B.30%

C.40%

D.50%

answer ：B

375. Gas welding ( cut ) The copper content of the hose connector shall not be greater than that of the equipment () Made of copper .

A.50%

B.60%

C.70%

D.80%

answer ：C

376. High pressure gas cylinder means that the nominal working pressure is greater than or equal to ()MPa Gas cylinder .

A.10

B.20

C.30

D.40

answer ：A

377. Small volume gas cylinder means that the nominal volume is less than or equal to ()L Gas cylinder .

A.10

B.11

C.12

D.13

answer ：C

378. Materials for steel gas cylinders containing media prone to stress corrosion , The actual tensile strength of the material shall be controlled not to be greater than ()MPa.

A.820

B.840

C.860

D.880

answer ：D

379. A gas cylinder containing fluorine and oxygen difluoride , The nominal working pressure shall not be less than ()MPa.

A.10

B.15

C.20

D.25

answer ：B

 

380. The design service life of steel seamless gas cylinder is () year .

A.15

B.20

C.30

D.40

answer ：C

381. Liquefied petroleum gas cylinders every （） Annual test 1 Time

A.1

B.2

C.3

D.4

answer ：D

382. Dress up () Aluminum alloy cylinders shall be preferred .

A. Hydrogen fluoride

B. Medical oxygen

C. Methyl chloride

D. Hydrogen bromide

answer ：B

383. The nominal volume is greater than or equal to ()L Seamless steel cylinder , It shall be equipped with threaded quick release bottle caps or fixed protective covers .

A.5

B.10

C.15

D.20

answer ：A

384. During filling dissolved acetylene , The temperature of the bottle wall shall not exceed ()c°

A.30

B.40

C.50

D.20

answer ：B

385. Compressed gas is defined as the gas in ()°C When pressurized, it is completely gaseous .

A.-30

B.-40

C.-50

D.-60

answer ：C