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單項(xiàng)選擇題

The position of （） on the crosshead on a large diesel engine is determined by dowel pins.

A.the guideway
B.the piston rod
C.the crosshead shoes
D.the interlocked circlip

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單項(xiàng)選擇題

The ports are drilled in the liners at an angle of approx 20℃ the result being that （） is given a rotary movement.

A.the scavenging air
B.the exhaust gases
C.the mixed air
D.the spray oil

單項(xiàng)選擇題

The plunger may be rotated in the barrel by a rack and （） on a sleeve which is keyed to the plunger.

A.pinion arrangement
B.push rod
C.handle bar
D.cam device