（）is harmful for fuel pumps, fuel valves, cylinder liner, exhaust valve seats, and the turbocharger blades as well.
- ABad combustion of the fuel
- BBad atomization of the fuel
- CLiquid contaminants
- DSolid contaminant
问题
（）is harmful for fuel pumps, fuel valv
参考解析：
分类：船舶电气与船舶安全题库
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1、A fuel injection valve opening at pres
A fuel injection valve opening at pressure lower than normal will result in（）.Alate fuel injectionBearly fuel injectionChigh exhaust temperature from that cylinderDdecreased effective stroke from that injector
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Fuel pump index is （）.Athe viscosity indexBthe fuel oil contentsCthe starting speedDthe reading at the rack
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3、An increase in the fuel injection pump
An increase in the fuel injection pump discharge pressure can be caused by a/an _______.Aleaking delivery valveBexcessive bearing end playCplugged injector spray holeDincreased plunger stroke
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4、Fuel injection valves should be taken
Fuel injection valves should be taken out, cleaned, and lifting checked every （）.Atwo to four monthsBfour to six monthsCsix to eight month
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5、For most ship engines，the fuel is（）.
For most ship engines，the fuel is（）.Anatural gasBdiesel oilCpropaneDbunker fuel
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6、Engine fuel pump index is （）.
Engine fuel pump index is （）.Athe viscosity indexBthe fuel oil contentsCthe starting speedDthe reading at the rack