OSI参考模型有哪些层,按顺序() ["Application、session、transport、network、physical、physical、datalink","Application,presentation,session,network,transport,datalink,physical","Application,presentation,session,transport,network,datalink,physical","Application,session,transport,physical、network、physical、datalink"]
液压阀连接方式最常用的是()。 ["管式","板式","法兰式","插装式"]
最小有效量:刚引起()的剂量。
乘客乘车时禁止携带那些物品?
95599男性客服代表在配偶生产期间可享受()天的假期。 ["A、5","B、10","C、15","D、30"]
热再生塔顶温度高则()再生好,但热再生塔顶温度越高()损耗越大。