―般家庭和办公室照明通常采用（）作为电源连接线。 ["BV型聚氯乙烯绝缘铜芯线","BX型聚氯乙烯绝缘铜芯线","BLX型铝芯电线","RV型锏芯软线","BLV型铝芯电线"]
You are troubleshooting a WAN connection for TestKing, and on the router you execute the, "debug ppp authentication" command, and view the following output: What kind of handshake was used for the PPP authentication?（） [" one-way"," two-way"," three-way"," No handshakes required during authentication"," None of the above"]
创新思维的具体方式有许多种，较常用的有（）与灵感思维。 ["发散思维","立体思维","逆向思维","质疑思维"]
在电路中如果发生短路或严重过载时，需要迅速切断电源，担负这一任务的叫（）继电器。 ["时间","过电流","热"]
标准版
退化生态系统
