_____ the website of the Fire Department in your city, and you will learn a lot about firefighting.

A．Having searched

B．To search

C．Searching

D．Search

开通下面哪些异常单可以批量重新执行（）

A.自动回访监控中的异常单

B.调度异常管理异常单

C.调度异常管理超时调度处理单

D.异常工单处理查询的异常单