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單項選擇題

The cylinder cover is not provided with （）.

A.fuel valve
B.lubricator
C.indicator valve
D.the starting valve

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單項選擇題

The cylinder contains a great weight of air and is capable of burning a great quantity of fuel at（）.

A.the beginning of the compression stroke
B.the beginning of the suction stroke
C.the end of the working stroke
D.the end of the exhaust stroke

單項選擇題

The cylinder and piston must be warmed up （） to a temperature of about 140 degF in standing by engine.

A.repeatedly
B.quickly
C.gradually
D.immediately

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