在测CODcr时,检查试剂的质量或操作技术时用()标液。
参考答案:邻苯二甲酸氢钾
用所给词的适当形式填空。
1. There are three _______ (play) on my team.
2. Li Ming _______ (study) English every day.
3. Today is December _______ (two), 2006.
4. Help ________ (you) to some soup, children.
5. On ________ (teacher) Day, many students send postcards to their teachers.
6. I have fun _______ (work) with my classmates.
7. She _______ (be) here for ten years.
8. English, Chinese and math are very useful, but I like English _______ (well).
9. There are many _______ (bus) in a parking lot.
10. It is _______ (sun) today, let's go for a walk.
在Java中,由Java编译器自动导入而无需在程序中用import导入的包是( )。
A.javapplet
B.javawt
C.javutil
D.javlang