作为在市电和油机均无法正常供电的情况下,()是保障通信设备不间断供电的核心设备,通信设备对供电质量的要求很高。
A.电池
B.电阻
C.电压
D.电流
参考答案:A
句型转换。
1. The older girl is more outgoing.(对画线部分提问)
_____ _____is more outgoing?
2. There are ten desks. There are ten chairs, too.(改为同义句)
Desks are_____ _____ _____chairs.
3. This box is heavy, That box is light.(合并为一句)
This box is _____ _____ _____ that one.
4. Mr Green doesn't have any time this afternoon.(改为同义句)
Mr Green _____ _____this afternoon.
5. Girls should be quiet. (用outgoing改成选择疑问句)
_____ girls_____ _____outgoing?
后建、改(扩)建的建设工程与已有的管道设施相遇而产生的管道设施保护问题,由后建、改(扩)建的建设工程项目单位与管道企业协商解决。