Which of the following grooving methods does not remove any material from the pipe?
A) Roll grooving
B) Single grooving
C) Dual grooving
D) Cut grooving
Answer: A
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If a mercury thermostat seems out of adjustment, the first thing to do is _____.
a. recalibrate the thermostat b. reset the system switch to Off c. check for accurate leveling d. adjust the setting lever
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Suppose you want to practice welding on tubing, but none is available. What can you do?
What will be an ideal response?
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Direct current is described as _____.
A. omnidirectional B. unidirectional C. bidirectional
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The standard style of freehand lettering on technical drawings is vertical, single-stroke Arial.
Answer the following statement true (T) or false (F)
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