驻波比为1,表示完全匹配;驻波比为()表示全反射,表示完全失配。
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依法参加工伤保险,为从业人员缴纳保险费,是企业取得安全生产许可证必须具备的安全生产条件之一。
A. 正确
B. 错误
安规适用于运用中的发、输、变(包括特高压、高压直流)、配电设备上及相关场所的工作人员(包括基建安装、农电人员),其他单位和相关人员参照执行。
A. 正确
B. 错误
You have a Windows Server 2008 R2 computer that has an IP address of 172.16.45.9/21.The server is configured to use IPv6 addressing.You need to test IPv6 communication to a server that has an IP address of 172.16.40.18/21. What should you do from a command prompt?()
A. Type ping 172.16.45.9:::::.
B. Type ping ::9.45.16.172.
C. Type ping followed by the Link-local address of the server.
D. Type ping followed by the Site-local address of the server.