轨距（轮距）以（）字母表示。 ["K","L","S"]
R1 and R2 exchange HSRP between each other in the Company network. In which three HSRP states do routers send hello messages？（） [" Learn"," Speak"," Standby"," Listen"," Active"," Remove"]
（）是国家助学贷款的担保方式。 ["个人信用方式","抵押","质押","投保保险"]
《关于新形势下党内政治生活的若干准则》在（）上通过。 ["党的十八届六中全会","十八届中央纪委六次全会","庆祝党成立95周年大会","党的十八届五中全会"]
外部效应
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