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Diesel engine air start valve timing is controlled by________.A.engine operating speedB.an

Diesel engine air start valve timing is controlled by________.

A.engine operating speed

B.an air manifold

C.a hydraulic distributor

D.individual cams and valve gear

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第1题

To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with _____.

A.lantern rings

B.bearings

C.easing volutes

D.wearing rings

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第2题

If your vessel has a starboard list after taking on fuel, you would transfer fuel _____.

A.to starboard

B.to port

C.forward

D.aft

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第3题

It is important that the water _____ very often as this can lead to increased deposits.

A.not be changed

B.be changed

C.should not be changed

D.should be changed

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第4题

Which of the following statements is true concerning all three-phase alternators?

A.Each has three separate but identical armature windings acted on by one system of rotating magnets

B.Each has one armature winding acted on by three identical but separate systems of rotating magnets

C.All three-phase alternators are designed to operate with a O8 leading power factor

D.The three phases always provide power to the load through three sets of slip rings and brushes

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