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單項選擇題

The injector pump is operated by a cam which drives the （） up and down.

A.piston
B.drum
C.plunger
D.barrel

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單項選擇題

The injector pump is operated by a cam which drives （） up and down.

A.the needle valve
B.the plunger
C.the piston
D.the cylinder

單項選擇題

The indications of a scavenge fire are excessive black smoke, （） and peeling from scavenge trunking.

A.turbo-chargers surge
B.spark seen from the drains
C.paint blistering
D.all above are right