Which type of flip-flop is referred to as "one's catching"?
A) D B) toggle C) R-S D) J-K
D
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Name some of the properties that can be improved by the surfacing process.
What will be an ideal response?
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A ____ will stop both reverse gas flow and the flame of a flashback.
A. flashback arrestor B. reverse flow valve C. safety release valve D. safety disc valve
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When heat and pressure are not a problem, pipefitters use _____ pipe.
a. fiberglass b. thermoplastic c. cast-iron d. carbon steel
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The letters ____ are included on the drawing specifications to indicate when a left-hand thread is required.
A. LH B. LHT C. LT D. LTH
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