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剩余物/剩遗物(Residues)
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单选题Which of the following is a factor of fuel oil almost having nothing to do with the formation of combustion products?()A
setting pointB
ashC
sulfur contentD
carbon residues
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单选题These acid residues must be prevented from entering the crankcase, otherwise the lube oil would be()A
contaminatedB
emulsifiedC
deterioratedD
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名词解释题剩余物/剩遗物(Residues)
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