接地母排(earthing bar)
参考答案:
将PE线、联结线、接地线等汇集连通的母排,也称总接地端子。
用所给词的适当形式填空。
1. I (go) to zoo with my friend last Sunday.
2. I like (swim) in the river in summer.
3. There (be)a dog and two cats in the room.
4. Which (season) do you like best?
5. Who is the (tall) boy in your class?
6. I'm so (excite). The book is (excite).
7. Miss Li (teach) us Chinese this year.
8. It is a (wind) day today.
9. I often have (a) apple and (a) hamburger for mybreakfast.
10. The toy stone is on the (three) floor.
治疗梅毒首选()
A.红霉素
B.氯霉素
C.金霉素
D.青霉素
E.链霉素