单项选择题

In the common rail system, excessive pressure in the header may be caused by （）

A.improper adjustment of the bypass valve
B.a dribble in the fuel injection nozzle
C.insufficient leak-off through injection nozzle packing
D.a malfunctioning injection nozzle

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船舶电气与船舶安全

In the common rail system, excessive pressure in the header may be caused by （）