单项选择题
A.the pump supply pressure
B.the slope of the fuel cam
C.how the plunger is rotated
D.the number of sleeve segments engaged with the rack
单项选择题 If the jacket water temperature in an auxiliary diesel engine cooling system is lower than normal, the probable cause is （）
单项选择题 One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an （）
单项选择题 The plunger in a jerk pump is rotated until the release port is uncoveredIf the port remains uncovered all of the time, which of the listed operations will occur?（）