A.few
B.little
C.a little
D.less
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A.pressure
B.temperature
C.density
D.volume
A.pressure
B.temperature
C.density
D.volume
A.the saturation temperature is higher
B.the higher the saturation temperature
C.the higher is the saturation temperature
D.the saturation temperature is more high
A.liquid
B.steam
C.gas
D.electricity
A.did work
B.would work well
C.didnt work
D.wouldnt work
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A grease gun is generally used to lubricate a （）.
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An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
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