某工程项目分部工程双代号网络计划如下图所示，其关键线路为（）。

As the temperature for an air mass decreases, the ______.

A.absolute humidity increases

B.relative humidity increases

C.specific humidity increases

D.dew point rises

A．Because the fish population is increasing.

B．Because the temperature there is increasing.

C．Because the temperature there is decreasing.

D．Because the ozone layer is disappearing.

pressure, which is the best means to _____ of the engine.

A.increase the exhaust temperature

B.increase the power of

C.reduce the speed

D.increase the fuel consumption

the air could hold if totally saturated at the existing temperature of the sample, is called _____.

A.absolute humidity

B.specific humidity

C.effective humidity

D.relative humidity