When a crankshaft （） outside the engine, it should be carefully supported in a manner which will avoid imposing high bending moments on it.

A、has to be handled

B、may be handled

C、has being handled

D、will be handling

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更多“When a crankshaft （） outside the engine, it should be carefully supported in a manner which will avoid imposing high bending moments on it.”相关的问题

第1题

[单选题] Critical speed in diesel engines occurs when engine torque pulsations become （）

A、opposed to the crankshaft rocking couple B、resonant with the crankshaft natural frequency C、critical fore and aft crankshaft vibrations D、horizontal whipping motions of the crankshaft

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第2题

[] In a four-stroke/cycle diesel engine, the camshaft rotates at （）

A、A.twice the crankshaft speed B、B.half the crankshaft speed C、C.the same speed as that of the crankshaft D、D.a speed independent of that of the crankshaft

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第3题

[单选题] When the direction handle of telegraph is moved, the relative position of camshaft and crankshaft will be（）

A、changed accordingly B、unchanged C、positioned ahead D、positioned astern

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第4题

[单选题] The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.

A、crankshaft B、camshaft C、piston rod D、rack and pinion

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第5题

[单选题] Each cylinder in a two stroke cycle engine experiences combustion（）.

A、once each crankshaft revolution B、twice each crankshaft revolution C、every other crankshaft revolution D、every fourth stroke

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第6题

[单选题] The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）

A、one half crankshaft speed in a two-stroke cycle diesel engine B、crankshaft speed in a two-stroke cycle diesel engine C、two times crankshaft speed in a two-stroke cycle diesel engine D、one-fourth times crankshaft speed in a four-stroke cycle diesel engine