问题
单项选择题
对一级负荷中的特别重要负荷()。
A．必须要两路电源供电
B．除由两个电源供电外，尚应增设应急电源，并严禁将其他负荷接入应急供电系统
C．应由两个电源供电，当一个电源发生故障时，另一个电源应不致同时受到损坏
D．可采用一路电源供电，但必须采用应急发电机组作为第二电源
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
对一级负荷中的特别重要负荷()。
A．必须要两路电源供电
B．除由两个电源供电外，尚应增设应急电源，并严禁将其他负荷接入应急供电系统
C．应由两个电源供电，当一个电源发生故障时，另一个电源应不致同时受到损坏
D．可采用一路电源供电，但必须采用应急发电机组作为第二电源
参考答案：B
根据短文内容，用方框中所给词语的适当形式填空，使文章通顺、完整。（每词限用一次）
“Cool” can be used to express ____小题4:_ of interest in almost anything. When you see a famous car in the street, maybe you will say, “It’s cool.” You may think, “He’s so cool,” when you see your favorite singer. We all maximize the meaning of “cool”. You can use it instead ___小题5:_ many words such __小题6:__ “new” or “surprising”. Here’s an _小题7:story we can use to show the way the word is used. A teacher asked her students ___小题8: about the waterfall they had visited. On one ____小题9:paper was just one sentence, “It’s cool.” Maybe he thought it was the best way to show he saw and felt. Can you think of many other words that make your life as ______小题10: as the word “cool”? I can. And I think they are also very cool. |
