题目内容

The radiator is constructed to hold a large amount of water in tubes which provided a large area in contact with the______.

A. atmosphere
B. coolant
C. oil
D. fan

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The radiator cap is designed to seal ______ so that it operates under some pressure.

A. the lubricating system
B. the cooling system
C. the ignition system
D. the fuel system

The thermostat is designed to close off the flow of water from engine to_____ until the engine has reached the desired operating temperature.

A. fan
B. radiator
C. intake manifold
D. water pump

It is necessary to use a nonfreezing solution in the _____of water-cooled engines.

A. ignition system
B. fuel system
C. lubricating system
D. cooling system

Forced air circulation is provided by a fan of generous capacity which is driven from the engine _____ by a belt or by fan blade formed in the flywheel.

A. camshaft
B. rocker arm
C. crankshaft
D. connecting rod