2022 latest Beijing Construction welder (construction special operation) simulation question bank and answer analysis

The 100% question bank provides Special workers （ Welder ） Examination questions 、 Special workers （ Welder ） Test prediction questions 、 Special workers （ Welder ） The real exam question 、 Special workers （ Welder ） Certificate examination question bank, etc , Provide online questions and brush questions , Online mock exam , Help you pass the exam easily .

196. Acidic electrode contains more fluoride than alkaline .()

answer ： error

197. Oxygen hose and acetylene hose can be used interchangeably .()

answer ： error

198. The secondary end of the electric welding machine and the weldment shall not have grounding or zero connection devices at the same time .()

answer ： correct

199. The working conditions of the arc welding machine shall not exceed 1000 Working under atmospheric pressure of meters .()

answer ： correct

200. Electroslag welding does not produce splash .()

answer ： correct

201. Ultrasonic detection of electroslag welding seam shall be carried out after normalizing .()

answer ： correct

202 Electroslag welding , Cooling water should be supplied to the sliding block .()

answer ： correct

203. When using gas cylinders in winter , If bottle valve and pressure reducer freeze , Thaw with hot water or steam ..()

answer ： correct

204. Short circuit arc striking is to make the electrode directly contact with the workpiece .()

answer ： correct

205 The residual pressure of carbon dioxide cylinder shall not be lower than 1MPa.()

answer ： correct

 

206. The voltage of carbon dioxide gas heater shall not be higher than 36V.()

answer ： correct

207. Annealing of steel can reduce hardness , Making the material convenient for cutting and processing can eliminate internal stress .()

answer ： correct

208. Steel and iron are two major categories of ferrous metals , They are alloys with iron and carbon as the main elements ..()

answer ： correct

209. Pressure shall be applied during high-frequency welding .()

answer ： correct

210. High frequency welding generally does not use flux .()

answer ： correct

211. Silicon rectifier arc welder is a DC arc welder .()

answer ： correct

212. The distance between two weld toes on the weld surface is called the weld width .()

answer ： correct

213. The junction between the weld surface and the base metal is called the weld toe .()

answer ： correct

214. The weld forming system is the ratio of weld width to calculated weld thickness .()

answer ： correct

215. Welders shall not replace welding rods with bare hands .()

answer ： correct

216. The welder shall set up a supervisor for climbing operation .()

answer ： correct

217. The no-load voltage of electrode arc welding machine is limited to 90V following .()

answer ： correct

218. Carbon structural steel is mostly used for construction .()

answer ： correct

219. At present, the most widely used AC arc welding machine is “ Moving iron type ” AC welding machine .()

answer ： correct