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单选题
The crankshaft of diesel engine is supported by （）.
A
tension stretch
B
tie rods
C
through bolts
D
main bearings
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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
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lightened crankshaft flywheelD
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engine thrust bearingC
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main shaft flexible coupling
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单选题When a crankshaft （） outside the engine, it should be carefully supported in a manner which will avoid imposing high bending moments on it.A
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may be handledC
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will be handling
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单选题On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.A
thrust blockB
sounding rodC
connecting rodD
push rod
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单选题Critical speed in diesel engines occurs when engine torque pulsations become （）A
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单选题To determine the main bearing clearance of a propulsion diesel engine, you should measure the main bearing shell using a ball anvil outside micrometer and measure the crankshaft journal using a/an （）A
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单选题If a crankcase explosion occurs in a diesel engine, which of the listed actions should be taken?（）A
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单选题In a four-stroke/cycle diesel engine, the camshaft rotates at （）A
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