金属压力加工过程的实质是利用金属的(),对金属施加一定的外力,使其产生塑性变形。
A、塑性
B、硬度
C、脆性
D、强度
参考答案:A
根据括号内所给单词的适当形式填空。
1. He _______ (hang) with his friends last night so he get up late this morning.
2. There are many _______ (visit) in Huang Shan every year.
3. Who _______ (teach) you English last term?
4. We are having a _______ (meet) the day after tomorrow.
5. Mei Lanfang _______ (become) a Beijing Opera actor when he was ten.
6. Everyone should _______ (sleep) for more than eight hours to be healthy.
7. We went _______ (camp) on our last school trip.
8. What did you _______ (buy) for Li Fang as a present?
9. It looks _______ (like) her mother very much.
10. He _______ (real) likes to watch TV shows.
流浸膏与浸膏剂的区别是().
A.含生药比例不同
B.加防腐剂
C.加稀释剂
D.用于临床
E.颜色不同