单项选择题
A.air in the cooling system B.an overhauled water pump C.correct amount of coolant D.no air in the cooling system
The rotary motion of a diesel engine crankshaft is obta...
单项选择题The rotary motion of a diesel engine crankshaft is obtained from the up and down motion of the piston via the （）.
A.camshaft B.reduction gears C.rocker arm D.connecting or piston rod
High diesel engine cooling water temperatures can be ca...
单项选择题High diesel engine cooling water temperatures can be caused by （）.
A.a worn water pump B.not enough coolant C.air in the cooling system D.all of the above
The linear motion of a diesel engine piston is converte...
单项选择题The linear motion of a diesel engine piston is converted to the rotary motion required to drive gears, propeller shafts, and generators by the （）.
A.flywheel B.crankshaft C.journal bearings D.camshaft
