采用不同的施工工艺将涂料涂覆在金属表面上,避免金属与空气接触发生()反应。
A、氧化
B、还原
C、氧化还原
D、物理
参考答案:A
动词填空。
1. Everyone in his class _____ (fly) kites every Sunday.
2. Tom, _____ (not feed) the birds here.
3. What time _____ Lucy and Lily often _____ (have) supper?
4. What about _____ (put) the books on the desk?
5. At the weekend Mother often goes to the supermarket _____ (buy) something
to eat.
6. Simon often helps his father _____ (clean) his car in the afternoon.
7. He mustn't _____ (cross) the road when the light is red.
8. Thanks for _____ (tell) me about your new school.
9. Why not _____ (walk) your dog in the park this afternoon?
10. My best friend John enjoys _____ (run) very much.
下面那一个是PLC的全称()。
A.PROGRAMMABLE LOGIC COMPUTER
B.PROGRAMMABLE LOGIC CONTROLLER
C.PERSONAL LOGIC COMPUTER
D.PERSONAL LOGIC CONTROLLER