【单选题】For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an _____.
D.
drilled passage through the camshaft
【单选题】The oil lubricating diesel engine cylinders usually contain additives formulated to impart a high degree of alkalinity to _____ the acid conditions.
【判断题】15-17.在Windows中,管理员用户名Administrator是无法修改的。
【单选题】Excessive lubricating oil consumption in a running diesel engine can be caused by ________.
A.
clogged lube oil piping
B.
excessive valve-guide clearance
C.
high lube oil viscosity
D.
low lube oil temperature
【单选题】Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an _____.
C.
the ships/boats general alarm
D.
reserve oil storage tank
【简答题】What's the function of the lubricating oil in main engine?
【单选题】In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the _____.
A.
metal particles loosened by wear
B.
air when no air cleaners are used
C.
condensation of water vapors
D.
breakdown of the lubricating oil by dilution
【单选题】单级主减速器( )齿轮安装在差速器壳上。