單項(xiàng)選擇題The air required for combustion is taken from the engine room through a filter fitted on the turbochargerThis reduces the risk for too and contamination of the combustion air（）
A.high temperatures
B.low temperatures
C.wet
D.dirty
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1.單項(xiàng)選擇題Engines, which are to be run in parallel have governors specially adapted for the same（）, about 4% to obtain basic load sharing.
A.speed settings
B.speed droops
C.speed drops
D.speed changes
2.單項(xiàng)選擇題Governors are equipped with motors for synchronizing, load sharing and frequency control（）
A.speed setting
B.load setting
C.speed changing
D.load changing
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Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
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One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
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Using a file without a handle may result in （）
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The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
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