单选题
1分
“The use of a poor quality oil can lead to rapid deterioration of its properties with the resultant ...
“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 ______.
参考答案: B
参考解析: 注:“使用劣质的润滑油会导致滑油品质的迅速恶化,结果在(油冷活塞)活塞顶形成沉积物,沉积物接下来导致热传递的显著下降,最后导致过热和热裂纹。” 根据这句话,我们可以知道导致过热和热裂纹的本质原因滑油品质的恶化。