题目内容

What is the cooling agent in the liquid cooling system?

A. Coolant
B. Air
C. Lubrication
D. Gasoline

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What is it_apparatus that cools the motor?

A. Radiator
B. Thermostat
Coolant
D. Pump

To avoid loss of antifreeze due to expansion, the cooling system_____

A. must not be completely filled
B. must install a bypass valve
C. must install a pressure control valve
D. must be sealed

The primary role of the distributor is to distribute high voltage from the_____ to the correct cylinder.

A. Spark plug
B. piston
C. coil

Spark timing is so critical to an engine's performance that most modern cars use a sensor to tell the engine control unit(ECU)_____

A. the exact temperature of the spark plugs.
B. the exact position of the pistons.
C. the exact location of the coil

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