题目内容
The _____ is designed to close off the flow of water from engine to radiator until the engine has reached the desired operating temperature.
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Automobile engine water pump are of many designs, but most are the ______ type.
The radiator is constructed to hold a large amount of water in tubes which provided a large area in contact with the______.
The radiator cap is designed to seal ______ so that it operates under some pressure.
The thermostat is designed to close off the flow of water from engine to_____ until the engine has reached the desired operating temperature.
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