以下产品不属于涉及饮用水卫生安全产品卫生许可批件发证范围是（）。
A.水质处理器
B.与饮用水接触的管材
C.除垢剂
D.污水处理剂
参考答案：D
简述BCG成长—份额矩阵分析意义。
用所给词的适当形式填空。
1. But you are supposed to type _____ (quick) so the other person doesn't get _____ (bore).
2. This is _____ (form) by _____ (use) the first letter of each word in the phrase.
3. You can learn it _____ (easy) by _____ (you).
4. Was it ______ (easy) and ______ (fast) to do this by working together?
5. E-mail English _____ (most) _____ (use) two types of word.
