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單項(xiàng)選擇題

Both the temperature and the pressure of the refrigerant are increased in the （）.

A.compressor
B.condenser
C.evaporator
D.expansion valve

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單項(xiàng)選擇題

The heat used to change a liquid to a vapor is called （）.

A.latent heat of fusion
B.latent heat of vaporization
C.specific heat of vaporization
D.latent heat of the gas

單項(xiàng)選擇題

The （） compressor and its electrical motor are entirely housed in a gas-tight casing.

A.open-type
B.hermetic
C.A and B
D.None of the above

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