单项选择题
A.the viscosity index B.the fuel oil contents C.the starting speed D.the reading at the rack
Fuel oil is thought to be one of the main factors （） th...
单项选择题Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.
A.have nothing to do with B.having nothing to do with C.have much to do with D.having much to do with
Fuel oil is pumped by means of （） from the bunker tanks...
单项选择题Fuel oil is pumped by means of （） from the bunker tanks.
A.a transfer pump B.a bilge pump C.a service pump D.a vacuum pump
Fuel is not supplied to the corresponding cylinders due...
单项选择题Fuel is not supplied to the corresponding cylinders due to （）.
A.a failure of the motor B.a failure of lubricator C.a failure of cylinder D.a failure of fuel pump
