【判断题】
主蒸汽管道保温后，可以防止热传递过程的发生
A. 对
B. 错
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答案
B
解析
暂无解析
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A. 暂态电流；
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断路器在送电前，运行人员应对断路器进行拉、合闸，以检查断路器___。
A. 动作时间是否符合标准；
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