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單項選擇題

The outside diameter of the pipe is （） the diameter of the bore of the piston rod, the result being that an annular space formed between the piston rod and the pipe.

A.less than
B.greater than
C.equal to
D.twice larger than

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單項選擇題

The operation between two fuel injections is called a working cycle, which consists of a fixed sequence of eventsWhat does "which" mean in this sentence?（）

A.a working cycle
B.the operation
C.two fuel injections
D.events

單項選擇題

The operation between two fuel injections is called a （）.

A.turning cycle
B.working cycle
C.working hour
D.working stroke

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