单项选择题
A.excessively late fuel injection
B.oil in the air charge
C.water in the fuel
D.injection continuing after the fuel charge is ignited
单项选择题 One cause of diesel engine surging can be a result of （）
单项选择题 Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to（）
单项选择题 In a diesel engine cooling system, the high temperature alarm contact maker will be activated on excessively high water discharge temperature from the （）