阳级炭块组包括（）。
A、阳极炭块、钢爪、铝导杆
B、阴极炭块、钢棒
C、阳极炭块，钢爪
D、阳极炭块，铝导杆
参考答案：A
根据句意及首字母提示补全单词。
1. There are three p________ in my family.
2. What's your f________ number?
3. In my school there are a________ eighty teachers.
4. I think e________ is at school today.
5. Don't w________. You can do it well.
当SQL的子查询返回的值是一个集合时，下列选项中的______不是在比较运算符和子查询中使用的量词。
A．REST
B．IN
C．ALL
D．ANY
