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三管轮轮机英语新题

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enotnecessaryafterinitialassembly.Howarethefueloilfeedpipesaremountedtotheinjectionpumps?Fueloilfeedpipeareintegratedintheinjectionpumps.Fueloilfeedpipesaredirectlymountedtotheinjectionpumpsbyaconnectingpiece.FueloilfeedpipesaredirectlymountedtotheinjectionpumpsbyashieldedpipeFueloilfeedpipesaremountedtotheinjectionpumpsthroughafilter.Howtostopthefuelinjection?A.drawthefuelracktozeropositionB.closethefuelvalvesC.liftoutthefuelinjector D.raisethefuelpumproller3)afterinitialassembly,Thefuelpumpandpumpbracket_________________.A.needadjustingwhenrequiredB.neednotadjustingatanytimeC.neednotadjustingatanyconditionD.B+C4)Thispassageistalkingabout________.A.theconstructionoffuelinjectionsystemB.theprincipleoffuelinjectionsystemC.theassemblingoffuelinjectionsystemD.theadjustingoffuelinjectionsystem

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