问题
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_____uses one or two high pressure pumps for all the cylinders with one more____ standby, while______have a separate high-pressure pump for each cylinder.
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The high pressure in fuel injection system of the diesel engine is produced by the _____.A
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The purpose of the low pressure cut-out switch is to _____.A.maintain liquid refrigerant a
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The domestic fresh water pump starters are controlled by pressure switches which operate w
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The replacement piping for diesel engine high pressure fuel systems must be the same lengt
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If a refrigeration crankcase compressor were short cycling on the low pressure cutout swit