It is abnormal that when the engine is being turned by the turning gear or by hand, （）.

[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 . has to be handledB . may be handledC . has being handledD . will be handling

[单选题]For a diesel engine, when the piston is at the （）, the clearance volume is the largest.A . TDCB . DTCC . BDCD . DBC

[单选题]With UMS, when the engine room is unwatched will control the main engineA．the bridge officer on watchB．the chief engineerC．the duty engineerD．the duty motorman

[单选题]Re-circulating the fuel when the engine is stopped can______.①keep the fuel at the correct viscosity ②cool the injectorA．①B．②C．①②D．neither ① nor ②

[单选题]In a diesel engine, when refitting piston rings you should ①check the ring gap at the smallest diameter of the cylinder ②remove carbon from the ring grooveA．①B．②C．①②D．neither ① nor ②

[单选题]When turning the engine with turning gear, you should keep the indicator cocks （）.A . attached to the indicatorsB . openedC . closedD . broke

[单选题]With UMS, when the engine room is unwatched （） will control the main engine.A . the bridge officer on watchB . the chief engineerC . the duty engineerD . the duty motorma

[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

[单选题]They thought hisbehavior was [abnormal].A.badB.frighteningC.repeatedD.unusu

[单选题]A．ccidental flooding of the engine room bilges by the bilge main is prevented by( ).A．stop-check valves installed in the bilge suction manifoldsB．using a positive displacement reciprocating bilge pumpC．installing educators in all bilge rose boxesD．in