In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to the （）.

[单选题]In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to theA．crossheadB．crankpinC．crank journalD．gudgeon pin

[单选题]While engine is in operation the piston moves up and down, thus causing the rotation of the （）.A . crankcaseB . slipperC . cam housingD . crankshaft

[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]For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.A . oil sprayB . oil bathC . oil control ringsD . drilled passage through the camshaft

[单选题]A diesel engine piston ring face is in direct contact with the （）.A . top of the ring grooveB . cylinder liner oil filmC . bottom of the ring grooveD . back of the ring groove

[单选题]Piston No2 of main engine has been removed, and it will be （） by noon tomorrow.A . liftedB . reassembledC . dismountedD . disassembled

[单选题]The cooling water of the diesel engine should be treated with chemical, because it contains .A．alkaliB．acidityC．salinityD．impurity

[单选题]Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from （）.A . exhaust valvesB . starting valvesC . fuel valvesD . the indicator cock

[单选题]Immediately after any diesel engine is started, the engineer should check the （）A . crankcase pressureB . lube oil pressureC . saltwater pressureD . exhaust temperature

[单选题]My ship’s engine responds well to telegraph orders and takes about 80 seconds to reverse from full speed ahead to full speed astern.This sentence（）.A . indicates the engine's particularsB . tells the engine's functionC . shows the engine'