单项选择题
The purpose of the flywheel of a diesel engine is to （）.
A.counterbalance the crank throws on the crankshaft
B.keep the engine running smoothly between power stroke
C.provide a belt-driving surface for the operation of auxiliary machinery
D.prevent the engine from overspeeding
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相关考题
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单项选择题
The pumps press oil into the cross-head bearing gap when the load on the shell is at its lowest What is the meaning of “its” in the sentence above?（）
A.the cross-head
B.the pumps
C.the shell
D.the load -
单项选择题
The pumps employed on board ship can be divided into two main categories ie（） pumps and centrifugal pumps.
A.gear
B.nonpositive displacement
C.positive displacement
D.rotary -
单项选择题
The pump has a constant stroke and the amount of fuel delivered is regulated by rotating （） which has a specially arranged helical groove cut into it.
A.the pump cylinder
B.the pump cam
C.the pump plunger
D.the pump miler
