单项选择题
A.water in the fuel oil supply
B.excessive fuel nozzle holder cooling
C.a distorted fuel spray pattern
D.leakage past the plunger into the oil drain
单项选择题 Due to excessive water in the fuel, a diesel engine fails to startBefore the engine can be started, the water must be removed from the （）.
单项选择题 A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）
单项选择题 In a four-stroke/cycle diesel engine, after the completion of the power stroke, the piston will move（）