建设监理合同中，业主单位应该承担的义务不包括( )。A．业主单位应该在监理单位开展

阅读短文，选择正确的答案。

      My name is John. I have a happy family. We share (分享) the housework. My mother can cook the meals

and wash the clothes. My father can sweep the floor. I can clean the bedroom.

1. What can John's mother do?

A. She can clean the window.

B. She can cook the meals.

C. She can water the flowers.

2. What can John's father do? 

A. He can clean the door.

B. He can sweep the floor.

C. She can empty the trash.

3. What can John do?

A. He can clean the bedroom.

B. He can clean the floor.

C. He can cook the meals.

用电动式交流电能表测量交流电能。( )

事故应急救援预案的核心内容是“及时进行救援处理”和( )。

A．“减少事故造成的危害程度”

B．“减少事故造成的损失”

C．“及时有效的处置事故”

D．“防止事故扩大化”

生物地化循环

操作系统之所以能够找到磁盘上的文件，是因为磁盘上的文件名与存储位置的记录。在DOS中，它叫做______。