A-A+
A.A fuel that burns cleanly.B.An oil additive
问题详情
A.A fuel that burns cleanly.
B.An oil additive that helps cool engines.
C.A material from which filters are made.
D.An insulating material sprayed on engine parts.
参考答案
正确答案:D
解析:听力对话中出现一个专有名词时,通常情况下会紧接着对这一名词进行进一步的解释。该对话在提到coniine oxide后对其作了解释: It's a really good insulator.And a thick coat of get sprayed on certain part of the engine即“是一种很好的绝缘体,是喷洒在发动机某一部位的厚厚的涂层。”选项D将这一解释进行了归纳概括。