常用电缆头的主要种类有哪些？
A、尼龙头电缆头；
B、干包电缆头；
C、热缩式电缆头、冷缩式电缆头；
D、插接装配式电缆头。
参考答案：A, B, C, D
用括号内所给单词的适当形式填空。
1. What will the weather_______ (be) like next Saturday?
2. —When _______ you _______ (arrive).
—Five minutes ago.
3. —Would you like _______ (go) skiing?
—Good idea!
4. Bring your umbrella because it may _______ (rain) later.
5. It's a good way _______ (improve) your English study.
