While engine is in operation the piston moves up and down, thus causing the rotation of 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]For a diesel engine, when the piston is at the （）, the clearance volume is the largest.A . TDCB . DTCC . BDCD . DBC

[单选题]F．or a continuous operation diesel engine, a duplex filter unit would be the best arrangement becauseA．changing filter elements would not interrupt engine operationB．filtering occurs twice in each pass of oil through the systemC．clogging will not occ

[单选题]For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because （）.A . changing filter elements would not interrupt engine operationB . filtering occurs twice in each pass of oil through the systemC . clogging wil

[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]The successful operation of any engine or machine and （） depend on effective lubrication.A . their no trouble periodB . their freely trouble periodC . its free trouble lifeD . its trouble-free life

[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 the （）.A . crossheadB . crankpinC . crank journalD . gudge

[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]While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?A．Make an entry in the official logbookB．Open the master control valves on the fixed CO2 systemC．Start the fire pum