根据句意及首字母提示完成单词。

1. There aren't a______ students in the room.

2. The tall b______ is a hotel and there are a lot of rooms in it.

3. There is a big g______ in our school and we often play basketball in it.

4.  —Where's my s______ book? 

     —It's in the lab.

5. Don't sit in f______ of me. I can't see the blackboard.

某信息系统项目总包单位A 将机房的空调工程分包给B单位，B 单位工程师经过勘查现场，提出变更冷媒管路由的新方案。以下关于该方案变更的叙述，正确的是（60）。

A．变更申请由B 单位提出

B．由于B 单位负责安装维护，因此变更无需经过审核

C．变更需要通过A 单位办理

D．由于B 单位工程师专业性更强，因此监理单位不必再次勘查与评审