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單項選擇題

With VIT the start of injection may be （） as the engine load is reduced within a certain range.

A.advanced
B.retarded
C.relayed
D.cut off

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單項選擇題

With Variable Injection Timing the start of injection may be （）as the engine load is reduced.

A.advanced
B.retarded
C.kept constant
D.none of the above

單項選擇題

With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing （）.

A.has a nip
B.is large enough
C.is zero
D.are suitable

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