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單項(xiàng)選擇題

When air is at its dew point it is at its（）

A.lowest absolute humidity
B.lowest relative humidity
C.highest absolute humidity
D.highest relative humidity

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單項(xiàng)選擇題

The latent heat of water vapor in air is dependent upon the （）

A.dry bulb temperature
B.wet bulb temperature
C.dew point
D.dry point

單項(xiàng)選擇題

If you find an extremely large refrigerant leak while using a halide torch, your flame will（）

A.change from blue to orange
B.‘flare up’ and remain lighted
C.probably go out
D.stay blue

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