A local area network (LAN) is the communication of a number of computers by connecting to each one in a single location, usually a single floor of a building or all the computers in a small company.
A. lineB. cable C. copper D. copper cash

工会有权参加伤亡事故和其他与作业有关的严重危害职工健康问题的调查，向有关部门提出处理意见，并有权要求追究直接负责的行政领导人和有关责任人员的责任。以上说法（）。

A.不具体

B.不正确

C.正确

D.不完全