质量相等的石墨和足球烯(化学式为C60)所含质子数( )
A.前者多
B.相等
C.后者多
D.无法确定
答案:B
根据句意及首字母完成单词。
1. Alice trusts you, only you can p _____ her to give up the foolish idea.
2. Some schools teach, but fail to e _____ their students.
3. Doing more e _____ is good for you.
4. He wants to write something about s _____ healthy.
5. Eating junk food has many d _____ for the children.
6. Can you say some kinds of t _____ school meal?
7. He has r _____ his mistakes. He felt very sorry about that.
8. When you sit at a restaurant, the waiter often shows you m _____ at first.
9. Don't eat too much s _____ , it's bad for teeth.
10. He has a great i _____ in sports and he often watches sports programmes on TV.
在使用SSL对浏览器与服务器之间的信息进行加密时,会话密钥由( )。
A.浏览器生成
B.用户自己指定
C.服务器生成
D.网络管理员指定