The multiple-choice test of a welder

Second, the multiple-choice questions
1, carbon structural iron Q235AF in,
A, yield point B, the tensile strength C, the elongation D, impact toughness
2, 20 is the carbon content of steel (C) carbon steel.
A, 2% of high-quality B, 2% of the normal C,GHD Leopard Grain, 0.2% of high-quality D, 0.2% of the ordinary
3, steel Q345A in the
A, quality carbon structural steel B, high-strength low-alloy steel
C, pressure vessel steel D, the quality class
4, acidic welding electrode, the electrode resistance as compared with the alkaline pore capacity is (A),.
A. Strong B. Weak C. Uncertain D. The same
5, commonly used in the grades for the H08Mn2SiA wire
A, manganese content was 0.02% B, manganese content is 0.2%
C, Mn content of 2% D, manganese content of 20%
6, stainless steel welding rod model for the last two digits
A, DC were receiving B, DCRP C, AC D AC-DC can be
7, electrode diameter is (A) to represent.
A, welding essence diameter B, electrode diameter C, wrapping thickness D, welding and wrapping the gist diameter, thickness and
8, electrode type EDP CrMo Al 03 in the
A SMAW soldering B C D submerged arc welding
9, carbon steel, low alloy steel welding rod culling is usually based ashore the (A) level,GHD Red Butterfly 2011, structural rigidity, select the appropriate level of working conditions of the electrodes.
A, intensity B, the thickness of C, D chemical combination of the weld quality requirements
10, basic welding electrode over the weld cracking resistance of acid (C).
A,GHD Green Straighteners, the same as B, bad C, good D uncertainty
11, sour electrode for rust, oxidation sensitive skin and portly than the basic electrode (B).
A, big B,GHD IV Mini Straighteners, small C, the same uncertainty D
12, according to our current rules, ought approach the naturalness argon (D) to meet the requirements of welding.
A, 98.5% B, 99.5% C, 99.95% D, 99.99%
13, E4303, E5003 is (A) type of electrode coating.
A, titanium calcium type B, ilmenite-type C, sodium steel hydrogen D, cheap hydrogen potassium type
14, argon gas cylinders drew appearance (B).
A, White B,GHD IV Straighteners, Gray C, sky blue D, Al White
15, current national standards for electrode models, the
A, J B, H C, E D, A
16, made of stainless steel welding rod, the principal shall obey with the parent material (C) principles.
A, such as strength of B, such as impact toughness C, and additional components D, such as plastic
17, when TIG welding (A) the best shape of the electrode end, is frequently accustom.
A, tapered flat side B, flat-like C, spherical D, conical peak
18, the current (C) is an ideal electrode substance, is intended to maximize the use of the tungsten.
A, pure tungsten B, Thorium Tungsten C, Tungsten Cerium D, zirconium tungsten
19, currently the vast bulk of type nuclear power plant nuclear power plant is a ___ (A)
A. PWR B. C. Heavy Water Reactor BWR D. Fast reactor
20, Chernobyl-type nuclear power plant is used in ___. (D)
A. Heavy water reactor B. PWR C. BWR D. graphite reactor
21, anti-nuclear power plant leaks radioactive barrier for the third (C).
A. Fuel cladding B. Pressure vessels and their circulate C. D. containment chance arrange
22, in China (C) temperature gas cooled reactor demonstration project under construction (the HTR-PM), HTR-PM machine with two piles with a set that power from the two reactors, each reactor received a steam generator, steam turbine share a single.
A. Fujian B. Zhejiang C. Shandong D. Beijing
23, nuclear power plants and power factory from the outlook of environmental pollution compared to the avails of nuclear power plants because the ___ (B)
A. does not taint the environment
B. environmental pollution significantly lower than the power plant
C. almost the amplitude of environmental pollution
D. advantageous to the surroundings
24,GHD Carry Case & Heat Mat, nuclear potential injure to the human body effectively ___ (A)
A. radiation
B. steam burns
C. flame burns
D. ruckus pollution
25, welding safety equipment in nuclear activities, the French RCC-M standard weld on some important requirements and product Weld the same conditions (D) welding.
A. Simulated example B. On benefit of example C. D. See the example file
26, the present pressurized water reactor nuclear power plant safety level of nuclear safety equipment is divided into (B) level.
A. II B. III C. Four D. Five
27, to assure the safety of nuclear power plants usually (C) to prevent radioactive leaks.
A. Measures to prevent plugging B. Stereotype secluded C. D. Multiple physical barriers and barricade in depth security
28, in mandate to prevent leakage of radioactive nuclear power plants, normally in (B) barrier.
A. Two B. Three C. Four D. five
29, nuclear power is the use of nuclear fission vigor generation in security, in adding to conventional thermal power plants with the same requirements for secure operation, there are the solitary (D), which is the maximum essential issue of nuclear power plant safety.
A. B. to prevent steam leakage C. prevent consume leakage D. to prevent dust leakage of nuclear radiation perils obstruction
30, nuclear safety equipment includes an integral reactor coolant system oppression boundary for always equipment: reactor pressure container, reactor coolant pumps, (A), a side of steam generator, control wands drive machinery of the shell, the chief channel and stretched to and including the second isolation valve in the articulation pipe (inside diameter colossal enough to damage the regular afford system behind the coolant tin no recompense for the loss.)
A. Regulators B. Residual heat removal pump C. Fluctuations in line D. Spray pipeline