【单选题】Neither the students nor the teacher _______ got the right answer.
【单选题】Teacher: Where is Mike this morning? Student: He‘ s got a cold. Teacher:__________
A.
Just tell him to take it easy.
C.
What' s the matter with him?
【单选题】The students looked ,so the teacher repeated the question. [ ]
【单选题】My teacher ________ this morning because I was late for class again.
【单选题】以下关于机房交流配电系统说法正确的是()
A.
交流配电系统的市电和油机两路输入可以同时供电
B.
在采用三相四线制或是三相五线制的回路中,应该在相线和零线上都安装熔断器
C.
当出现电源相关告警时,为防止故障扩散或烧毁设备,应立即关闭电源
D.
电源系统的告警信号应保持正常工作,严禁擅自切断警铃和告警灯。
【单选题】—What do you think of your Chinese teacher? —She is kind and ____ with us. [ ]
【单选题】Teacher:Where is Mike this morning? Student:He's got a cold. Teacher:______
B.
What's the matter with him?
C.
Just tell him to take it easy.
【多选题】对于机房电源系统的配置,下列说法正确的是()。
A.
交流配电设备:交流配电设备的配置应按满足远期容量考虑
B.
组合式开关电源的机架容量应按远期容量考虑,其整流模块应按近期负荷N+1(10块整流器以上每10块多备用1台)冗余配置
D.
一般情况下,后备蓄电池放电时间要求:市区基站不小于10小时郊区基站不小于4小时