A、A.assist in a quick cutoff of fuel injection
B、B.allow oil backflow from the injector to the helix
C、C.reduce fuel oil pressure between injection strokes
D、D.meter the quantity of fuel delivered
更多“The purpose of the delivery check valve used in a diesel fuel injection jerk pump is to （）.”相关的问题
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A、the purpose of trimming B、the approval for ballast C、the purpose of voyage D、the approval for operation
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