问题
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Air bubbles in a hydraulic governor can cause ______.A.sluggish responseB.speed droop vari
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Dirt in a fuel oil system of a diesel engine can cause __________.A.damage to strainersB.o
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Food packages, bottles and tins for drinks can cause ______.A.air and water pollutionB.bot
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We can conclude from the passage that ______.A.there is a consensus about the causes of th
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Combustion knock occurring in a diesel engine can be caused by _____.A.excessive fuel pene
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In an operating diesel engine, pre-ignition can be caused by _____________.A.excessively l