单项选择题
Thermal energy in transition is also referred to as （）.
A.heat
B.power
C.horsepower
D.foot-pound
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A.worn bearings and piston pins
B.slugging due to flooding back
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D.All of the above -
单项选择题
The air charge leaving an intercooler, or after-cooler of an air compressor can be expected to be （）.
A.superheated
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Before starting a reciprocating, steam-driven pump that has been idle for a period of time, you should （）.
A.open the steam line mot valve
B.drain the steam cylinder
C.close the steam cylinder drains
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