One of the broad classifications of fittings, ____, are appropriate in applications requiring that the piping systems occasionally be disassembled.
A. beveled fittings
B. flanged fittings
C. welded fittings
D. screwed fittings
Answer: B
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ASTM C1329 applies to ______, a hydraulic cement similar with the added requirement of meeting a minimum bond strength.
A. blended hydraulic cement B. mortar cement C. masonry cement D. portland cement
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The sum of the three angles of a triangle is always _____.
a. 90 degrees b. 180 degrees c. 270 degrees d. 360 degrees
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The refrigerant enters the compressor from which component?
A. evaporator B. condenser C. liquid line filter drier D. mertering device
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What element is used to produce the electricity in fuel cells?
A. oxygen B. hydrogen C. carbon D. nitrogen
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