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單項選擇題

During the inspection, the starting air valves should be closed （）the engine from turning.

A.to increase
B.to speed up
C.to prevent
D.to reduce

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單項選擇題

The viscosity regulator controls the fuel oil temperature （）provide oil at the correct viscosity for combustion.

A.in order that
B.because of
C.in order to
D.owing to

單項選擇題

To avoid scavenge fires occurring the engine timing and equipment maintenance （）.

A.should be correctly carried out
B.should correctly be taken place
C.should carried with care
D.must to carry out with great care

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