These extreme sports belong in the __________ (分类) of popular hobbies.
查看答案
__________ (慢跑) can be done at any time anywhere and does not even need any special equipment.
There is no reason to say you have no time for __________ (爱好) .
变压器复压启动的过流保护需要进行定值整定的继电器不包括( )。
A. 过电流
B. 负序电压
C. 过电压
D. 低电压
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