氧化漂白剂

用括号内所给动词的适当形式填空。

1. More trees and flowers should _________ (plant) to make our hometown beautiful.

2. We must do everything we can _________ (keep) waste water from running into rivers.

3. When I was young, my grandfather told me that the sun _________ (rise) in the east.

4. Would you mind _________ (not smoke) in public?

5. John _________ (chat) with his son while his wife was cooking in the kitchen.

简述简支梁荷载工况及主要测点布设位置。

知识产权权利人发现侵权嫌疑货物即将出口的，可以向货物进出境地海关提出扣留侵权嫌疑货物的申请。 ( )

氧化焙烧