Three multiple-choice test of welders

70. Which of the following adoptions are not used when welding arc welding electrode: (C)
A. D507Mo B. D507 C. J507 D. D577
71. on the electrode arc welding, the following statements is correct: (D)
A. more B. using nickel-based welding electrodes are joined by DC low D. C. diluted common interpretation of welding defects of crack
72. Which of the following welding methods are not used in hardfacing of valve sealing surface: (A)
peppery cable TIG welding
A. B. C. SMAW welding, plasma arc welding D.
73. Following the valve sealing surface on the welding hardfacing is not correct to say: (D)
A. using cobalt-based welding wire, its temperature at 650 ℃ can still retain the wear resistance is constantly used for small chapters surfacing B. C. surfacing wafer hardness of up to 40 ~ 50 HRC D. generally not mild to lukewarm up the cold such amounts
74. electrode is not correct on the D507 is: (B)
A. low hydrogen sodium type of surfacing does not necessitate drying before welding electrode B. C. D. for welding with DC reverse operating temperature beneath 450 ℃ in carbon iron or alloy valves
75. hardfacing on the valve, the following expressions is incorrect: (D)
A. When using gas welding melt depth, low efficiency, arc welding electrode B. When using a higher dilution rate of some major surface C. It should too be non-destructive testing before surfacing D. surfacing was premier used in valve hardfacing in the door
76, goggles piece color depth culling, generally _____A____
A. Welding current increases, the deeper the color should be the lens B. The smaller the welding current, the deeper the color should be the lens
C. Basic coated electrode secondhand, the lens color ought be shallower D. Use of acid wrapped electrode,GHD Diamond Flag 2011, lens color should be shallower
77,GHD Pink Limited Edition, found that welders cordless shock, immediately _____C____.
A. B. Leadership Report Cut the cable C. Cut off the power afford D. Will move human away
78, when the cylinder valve to freeze thawing method is _____B____ ·
A. Use roasted B. Water use 45 to 60 degrees C. D. use the hair dryer heating Hammer
79, in mandate to discourage electric shock, welding should be ____A_____
A. Welding machine chassis ground B. Weldment Grounding C. Welding and weldment chassis ground at the same time D. No ground
80, no poison gas on the welder is ____C_____.
A. Ozone B. CO C. D. carbon dioxide Sulfur dioxide
81, whether the interior wiring or equipment on bombard, should not be used ____D_____ launch.
A. Carbon tetrachloride B. Sand C. D. carbon dioxide Water
82, oxygen bottles in the sun exposure may have ____C_____.
A. B. Leak Oxygen impurity C. Explosion D. Burning
83, the risk of electric shock and wet and the larger context, the security of the provisions of voltage (B)
A, 2.5 V B,GHD Classic Straighteners, 12V C, 24V D, 36V
84, the secure voltage amount of the common provisions of ______B___.
A. 110 V B. 36 V C. 24 V D. 12 V
85, oxygen tanks should usually be (C) place, and must be firmly placed.
A. Level B. Tilt C. Vertical D. Inverted
86, when the electrode holder and workpiece short circle shall not begin the welding because ____。 (C)
A, to dodge superfluous burn resistance welding machine B, to lest burn welding arbitrage voltage is also high
C, to avoid short-circuit present is too colossal burn welder D. Injury welder
87, cerium used in welding,GHD, thorium tungsten wands should be stored on the ____. (C)
A, tray B, Wooden C, lead carton D,GHD Purple Straighteners, aluminum circumstance
88, high-altitude operation, the welder should ____。 (A)
A, seat belt B, the welding cable wrapped around the body
C, the welding cable coated approximately the arm D, the welding wire wire wrapped around the thighs
89, welder working at heights, welding cables should be knotted in a nailed situation ,____。 (B)
A, following a safety web B, the ground should be some attention
C, separate welding apt be scrupulous D, wear a helmet
90,GHD Straighteners, welded in a sealed container may not be aboard the A welder .
A, container B, outside the container C, floor D, settee
91, in the clean-up welding slag, splatter, the welder have to be dressed ;. (D)
A. Insulated rubber B. C. mittens Masks D, gloves, cups, truce and light
92, retinue which the welding wire when the valve is correct? (B)

93, when welding at high height is inconsistent with the provisions of (D)
A. welder welding, the wear standard seat belts.
B. welder welding, the cables or oxygen, acetylene tube is not wrapped around the body, and fixed on the shelf.
C. welding and dangerous area at the bottom of flammable, combustible substances should be cleared.
D. welding or precarious zone at the base of the staff to linger.
94, welding equipment failure in the lesson of the welder is responsible for (A)
A. tear off the power immediately advertise the electrician check the repair
B. immediately cut off the power, self-inspection repair
C. Charged check repair
D. electrician retard the repair quickly
95, inside the container welding in the nuclear, the lighting voltage should be used (D).
A. 80V B. 36V C. 42V ; D. 12V
96, the welder should at least apply for examination (B) alternatively equivalent level of education, health, vigor in rigid accordance with welding programs to manipulate independently undertake welding work.
A. B. basic educate than medium educate or junior high educate
C. D. High School College
97, welder, welding operator checkup of elementary academic knowledge, legal for (C) annuals.
A. 2 B. 1 C. 3 ; D. 4
98, welder basic knowledge test score of 100 points, not less than (B) into obedience.
A. 50 B. 60 C. 70 D. 80
99, HAF603 the provisions of the Classification of welding, arc welding electrodes in (A) said.
A. HD B. HWS C . HM D. HR (B)
100, HAF603 the provisions of the Classification of welding, GTAW to (A) said.
A. HWS B. HWZ C. HJD ; D. HM