在选矿作业中对指标的影响因素主要有三种:即()、()及()。
A、矿石性质的影响
B、磨矿粒度的影响
C、矿浆浓度的影响
D、矿石品位
参考答案:A, B, C
用所给词的适当形式填空。
1. I don't know where I _____________ (will) be in 2020.
2. They are going to _____________ (has) classes.
3. No _____________ (smoke).
4. _____________ (tell) us the rules of the competition.
5. There are _____________ (many) bicycles than cars in the world.
6. Your grandma _____________ (have) to take this medicine at once.
7. The doctor says Matt's ankle is _____________ (break).
8. Tom hates _____________ (shop).
9. I hope it is _____________ (sun) tomorrow.
10. If your foot or leg is hurt _____________ (bad), don't walk.
下列关于肌松药的合理应用,错误的是()
A.肌松药是全麻的重要辅助用药
B.用于全麻诱导插管和术中肌松维持
C.可避免深麻醉带来的危害
D.肌松药单与氧化亚氮合用不宜进行腹腔内大手术
E.给肌松药后,拇内收肌松弛早于咽部肌肉