皮皮学，免费搜题
登录
搜题
【单选题】
设备选型时要注意.当断路器开断感抗或容抗的负载时，有可能使电弧不在电流通过零点时熄灭，而可能是在电流某一瞬间值时强迫截断，此时由于感抗电流由某一瞬间值突然下降到零的急剧变化，在设备上就会感应出很高的（）。A.
过电流
B.
过负荷
C.
操作过电压
D.
温度
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】某数字通信系统的码元速率为 1200Baud ,接收端在半小时内其接收到 216 个错误码元,则该系统的误码率为( )
A.
10-4
B.
10-5
C.
10-6
D.
10-3
【简答题】my family and my life. It was then when I realized that my friends
【简答题】Thir, for me, was a challenging year. My parents divorced and I moved to a new town with my f ather, far from my old family and friends. I was terribly lonely mad and would cry myself to sleep eac...
【简答题】Thir, for me, was a challenging year. My parents divorced and I moved to a new town with my father, far from my old family and friends. I was terribly lonely and would cry myself to sleep each nig...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
