单项选择题
A.one another B.the other C.each other D.each others
The crank pin journal is provided with large bores for ...
单项选择题The crank pin journal is provided with large bores for （）.
A.lubrication B.cooling C.balancing purpose D.ventilation
The crank chamber oil （）.A.can be recoveredB.is only su...
单项选择题The crank chamber oil （）.
A.can be recovered B.is only supplied to cylinders C.only feeds the main bearing D.is a kind of detergent
The correct tightening is obtained by use of （） to meas...
单项选择题The correct tightening is obtained by use of （） to measure the extension given to the bolts.
A.pressure gauges B.stretch gauges C.thermometers D.bridge gauges
