单项选择题
A.tap-bolts B.jack-bolts C.tie rods D.fitted rods
The common method of applying oil to the cylinder walls...
单项选择题The common method of applying oil to the cylinder walls is by means of small pump assembled in units, known as （）.
A.mechanical lubricator B.lubrication function C.forced feed system D.bearing lubrication
The cleaned heated oil, after passing through the centr...
单项选择题The cleaned heated oil, after passing through the centrifuges, is to be pumped to a （）.
A.settling tank B.service tank C.ballast tank D.drain tank
The cast iron guide-ways for （） are attached to the top...
单项选择题The cast iron guide-ways for （） are attached to the top section and seal off the crankcase.
A.the connecting rod B.the cross-head C.the piston rod D.the air box
