机房地面高低不平,高低相差大于()m,应在高侧设置护栏。 ["0.3","0.5","0.75","1.0"]
在PPP协商流程中,LCP协商是在哪个阶段进行的:() ["Authenticate","Network","Establish","Terminate"]
折皱弯头()律的折皱。 ["外园","内园","中心轴"]
在封装HDLC协议的接口上,设定状态轮询定时器时间间隔的命令是:() ["hdlckeepalive","keepalive","hdlctimeout","timerhold"]
机房应安装维修用电源插座,该插座应为交流()V。 ["36","50","110","220"]
单程票在()、()或临时售票/问询处售卖。