电极电位对判断氧化还原反应的性质很有用,但它不能判断()。
A、氧化还原反应的完全程度;
B、氧化还原反应速率;
C、氧化还原反应的方向;
D、氧化还原能力的大小。
参考答案:B
用括号内所给词的适当形式填空
1. I am afraid there _____(be) a meeting this afternoon. I can't join you.
2. My uncle says he _____(come) back in two weeks.
3. We _____ go skating next Sunday.
4. There _____(be) a football match in our school this afternoon.
5. Thank you for _____ (give) me so many beautiful flowers.
根据客观检查手段AHA将心功能分为()
A.四级
B.五级
C.以上都不对
D.三级
E.六级