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单选题
“The use of a poor quality oil can lead to rapid deterioration of its properties with the resultant formation of deposits in the piston crown which in turn results in a considerable reduction in heat transfer with subsequent overheating and thermal cracking” According to this sentence, we can know that the principle reason of the overheating and thermal cracking is（）
A
the use of a poor quality oil
B
the deterioration of its properties
C
the formation of deposits
D
the reduction in heat transfer ability
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更多 “单选题“The use of a poor quality oil can lead to rapid deterioration of its properties with the resultant formation of deposits in the piston crown which in turn results in a considerable reduction in heat transfer with subsequent overheating and thermal cracking” According to this sentence, we can know that the principle reason of the overheating and thermal cracking is（）A the use of a poor quality oilB the deterioration of its propertiesC the formation of depositsD the reduction in heat transfer ability” 相关考题
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共用题干
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safety screens are of poor qualityB
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单选题The Charterers to have option of using Owners’ bunker contracts. This sentence indicates that（）.A
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Security managementF
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