问题
单项选择题
监控中心的电源应按所在建筑的最高等级配置，且不应低于（），并应保证不间断供电。
A.一级负荷
B.二级负荷
C.三级负荷
D.不作要求
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
监控中心的电源应按所在建筑的最高等级配置，且不应低于（），并应保证不间断供电。
A.一级负荷
B.二级负荷
C.三级负荷
D.不作要求
参考答案：B
| 用方框中所给词语的适当形式填空，每个词语只能使用一次。 | |
2. _______ is my hobby. 3. Excuse me, have you ________ any books about biology? 4. What's the ________ between American English and British English? 5. Where's Jim? He has ________ to plant trees with his classmates. 6. Tom thinks that the movie Hero is much ________ than Crouching Tiger, Hidden Dragon (卧虎藏龙). 7. The students ________ talking when the teacher came in. 8. The Olympic ________ of 2008 will be held in Beijing. 9. I've _______ in this city for about 30 years. 10. There are a lot of people ________ English in China now. |