单项选择题

The temperature at which water vapor in the atmosphere begins to condense is called the （）.

A.dew point temperature
B.condensation temperature
C.psychometric temperature
D.absolute humidity temperature

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单项选择题

A.low viscosity index
B.high viscosity index
C.high neutralization number
D.low demulsibility quality

单项选择题

A.Loss of suction
B.Increased clearances
C.Decreased clearance
D.Decreased slippage

单项选择题

A.Twice the dry bulb temperature
B.10℃ above the dry bulb temperature
C.5℃ above the dry bulb temperature
D.Equal to the dry bulb temperature