在回收站中,选择一个文件后,选择“文件”→()可恢复该删除的文件。
A.恢复
B.还原
C.撤销
D.复原
参考答案:B
Loulan, once a small, wealthy commercial city, is believed by many people___________over gradually by sandstorms from AD 200 to AD 500.
A.covered
B.was covered
C.to be covered
D.to have been covered
根据《城市污水处理及污染防治技术政策》,在经济发达的城市或受纳水体环境要求较高时,可考虑将( )纳入城市污水收集系统。
A.雨水 B.初期雨水 C.中初期雨水 D.后期雨水