The primary task of the compressed air system is to deliver the starting air necessary for （）

The starting air bottle should be pumped up to maximum ...

单项选择题The starting air bottle should be pumped up to maximum pressure by the （） before start of the engine.

The process during which liquid containing a reasonable...

单项选择题The process during which liquid containing a reasonable amount of sensible heat at a particular pressure immediately changes into steam after admitted to a chamber at a lower pressure is called （）.

When distilling salt water the cooling water dischargin...

单项选择题When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.