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单选题
A wobbling tail shaft is an indication of（）.
A
shallow water
B
an engine that is misfiring
C
a tight tail shaft gland
D
worn stern bearing or misalignment
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A wobbling tail shaft is an indication of ______.A.shallow waterB.an engine that is misfiringC.a tight tail shaft glandD.worn stern bearing or misalignment
考题
已知广义表L=（（x，y，z），a，（u，t，w）），从L表中取出的原子项ASCII码最大的运算是（）。A、head（tail（tail（L）））B、tail（head（head（tail（L））））C、head（tail（tail（head（L））））D、head（tail（tail（tail（L））））
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考题
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考题
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考题
单选题While in drydock your vessel will be belt-gauged.This process involves（）.A
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考题
单选题Some vessels are equipped with a water lubricated stern robeWhen at sea, operating under normal conditions, the water service valve from the ships saltwater system to the bearing should be （）.A
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open, and no leakage permitted across the shaft packingD
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考题
单选题During the dock repair, when installing the tail shaft and propeller, who should be on the spot to supervise?（）A
chief engineerB
the engineerC
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考题
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tail（head（head（tail（L））））C
head（tail（tail（head（L））））D
head（tail（tail（tail（L））））
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单选题During the deck repair,（） should be measured firstly before tail shaft is drawn out.A
the sinking of tail shaftB
the clearance of stern bearingC
the total flexure of both end bearingD
main engine crankshaft deflection
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