单项选择题
A.temperature B.water level C.pressure D.rate of flow
We use （） to distill fresh water from sea water.A.engin...
单项选择题We use （） to distill fresh water from sea water.
A.engine B.sea water pump C.cylinder cooler D.fresh water generator
In the condenser, the hot, high pressure refrigerant ga...
单项选择题In the condenser, the hot, high pressure refrigerant gas is cooled by the sea water and becomes（）.
A.fresh water B.vapor C.mixture D.liquid
The boiling and condensation points of a refrigerant de...
单项选择题The boiling and condensation points of a refrigerant depend on the （） exerted upon it.
A.temperature B.pressure C.velocity D.heat
