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“法兰克福学派”述评。

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下列行为错误的是（）

A. 长期使用遥控器开关电视机
B. 电冰箱和洗衣机要使用接地插座
C. 长期不用的电器，要拔掉电源插头

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（）是根据行波理论实现的测距方法。

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An engineer has added the following configuration snippet to an implementation planning document. The configuration will be added to Router R1, whose Fa0/0 interface connects to a LAN to which Routers R2 and R3 also connect. R2 and R3 are already EIGRP neighbors with each of her. Assuming the snippet shows all commands on R1 related to EIGRP authentication, which answer lists an appropriate comment to be made during the implementation plan peer review?（） key chain fred key 3 key - string whehew interface fa0/0 ip authenticat ion key - chain eigrp 9 fred

A. The configuration is missing one authentication - related configuration command
B. The configuration is missing two authentication - related configuration commands
C. Authentication type 9 is not supported; type 5 should be u sed insteaD
D. The key numbers must begin with key 1, so change the key 3 command to key 1

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当你正准备进入现场参观或检查工作时，首先关注的是什么（）？

A. 参观或检查内容
B. 入场安全告知
C. 劳保穿戴

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