皮皮学，免费搜题
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搜题
【多选题】
BZT装置有哪些要求（）A.
只有在备用电源正常时，BZT装置才能使用
B.
工作电源不论因何种原因断电，备用电源应能自动投入
C.
为防止将备用电源合到故障上，BZT只允许动作一次
D.
备用电源必须在工作电源切除后才能投入
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】According to the second paragraph, in which areas did the temperature fall below zero?
A.
Most of the South.
B.
Parts of interior South Florida.
C.
West Palm Beach.
D.
All of the above.
【单选题】In which paragraph you can find the answer of the following question? What did I (the Helpline volunteer) learn from the crisis training?
A.
Para. 1
B.
Para. 2
C.
Para. 3
D.
Para. 4
【单选题】In which paragraph you can find the answer of the following question? 3. Why did the caller want to commit suicide?
A.
Para. 3
B.
Para. 4
C.
Para. 5
D.
Para. 6
【单选题】In which paragraph you can find the answer of the following question? 5. Where did the caller's hope come from?
A.
Para. 21
B.
Para. 22
C.
Para. 23
D.
Para. 24
【简答题】创建函数使用什么关键字,要注意什么?
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