热介质和冷介质通过直接或间接的接触高温介质把热量传给低温介质的过程叫()。
参考答案:热交换
—Please bring your homework to school tomorrow, Steven.
—OK, I ______. [ ]
A. will
B. won't
C. do
D. don't
变电站装设避雷器是为了防止直击雷。