母线分段电抗器最大持续工作电流应为最大一台发电机额定电流的（

搜题请搜索小程序“爱下问搜题”

问题单项选择题

母线分段电抗器最大持续工作电流应为最大一台发电机额定电流的（）。

A.30%~60%

B.40%~70%

C.50%~80%

D.60%~80%

答案

参考答案：C

问答题

污染空气的气体有______、______、______．产生温室效应的气体是______．

单项选择题

Poetry is defined by () as " the spontaneous overflow of powerful feelings, which originates in emotion recollected in tranquility".

A. William Wordsworth

B. William Blake

C. Percy Bysshe Shelley

D. Robert Southey