Which line from the output of the show ip interface command indicates a layer 1 problem?()
A. Serial0/1 is up, line protocol is down
B. Serial0/1 is down, line protocol is down
C. Serial0/1 is up, line protocol is up
D. Serial0/1 is administratively down, line protocol is dow
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副高级专业技术人员任职期间每年参加继续教育学习应不少于()学时。
压力监测换算方法:①1cmH2O=_______kPa②1mmHg=_______cmH2O=_______mmH2O③1mmHg=_______kPa
2002年,中国的对外投资达到()亿元,成为发展中国家重要的资本输出国。
A. 8.94
B. 9.83
C. 7.86
D. 5.91
蜂窝移动通信网通常由一个(或几个)()和多个(1个或多个)()组成。