multiple choice
1. According to the Safety Production Law, the five rights enjoyed by practitioners are: ( ABDEF ) rights.
A. Right to know and advise
B. Refuse to violate the rules of command
C. Right to rest
D. Right to criticize, report, accuse
E. Right to claim out of insurance
F. Right to stop and withdraw in distress
G. Right to leave
H. Right to object
2. The oxygen cylinder valve and pressure reducer shall not be stained with ( ABC ).
A. Grease
B. Mineral oil
c. paint
D. Dust
3. After the welding and cutting operation, the main safety inspections such as ( BD ) should be done before leaving the site.
A. Tools
B. Eliminate Tinder
C. Clean up site hygiene
D. Turn off the power
4. The impurities in acetylene are mainly ( AC ).
A. Phosphine
B. Calcium carbonate
C. Hydrogen Sulfide
D. Aluminum sulfide
5. In general, the whole process of hot melt butt welding is divided into ( ABCD ) stages.
A. The preheating stage is the hemming stage
B. Endothermic stage
C. Conversion stage heating plate extraction stage
D. Welding stage, cooling stage
6. Factors affecting the quality of electrofusion welding interface include ( ABCD ).
A. Voltage fluctuation
B. Welding time
C. Ambient temperature
D. Bad operation
7. Which of the following gases have combustion-supporting effects ( AD ).
A. Oxygen
B. Acetylene
c. carbon dioxide
d. air
8. Which of the following are the conditions for chemical explosion ( ABC ).
A. The presence of flammable and explosive substances
B. Combustible and explosive substances are mixed with air and reach the explosion limit to form an explosive mixture
c. fire source
9. The WTO organization requires its member countries to meet the ( AB ) standards in the production process in terms of safe production, otherwise their products are not allowed to enter the international trade market.
A. green
B. Humane
C. Human rights
D. Justice
E. Comfortable
10. Preparations for hot melt butt welding include ( ABCD )
A. Clean the oil joints and connect the various parts of the welding machine correctly
B. Measure the power supply voltage and confirm that the voltage meets the requirements of the welding machine
C. Check and clean the heating plate. When the coating is damaged, the heating plate should be replaced. The polyethylene residue on the surface of the heating plate can only be removed with wooden tools, and oil and grease must be treated with clean cotton cloth and alcohol.
D. Correctly set parameters such as heat absorption, cooling time and heating plate temperature according to the welding process. Before welding, the heating plate should be properly preheated at the welding temperature to ensure uniform temperature of the heating plate
The above are the simulated questions and answers for the intermediate welder exam in Jiangxi Province in 2022. Xiaobian and Youtibao will continue to update the simulated questions and answers for the intermediate welder exam. If you need it, don't miss it. I also hope that all candidates can achieve good results in the intermediate welder exam.