多选题:交一交变频器(电压型)和交一直一交变频器各有特点,下列哪几项符合交一交变频器的特点?( ) 题目分类:供配电专业知识 题目类型:多选题 查看权限:VIP 题目内容: 交一交变频器(电压型)和交一直一交变频器各有特点,下列哪几项符合交一交变频器的特点?( ) A.换能环节少 B.换流方式为电源电压换流 C.元件数量较少 D.电源功率因数较高 参考答案: 答案解析:
What problem did Tony notice at the beach? What problem did Tony notice at the beach?A.It started to rain. B.People had lit 分类:供配电专业知识 题型:多选题 查看答案
Which is the best title for the passage? Which is the best title for the passage?A.A New Way to Get Rid of Polluted Air B 分类:供配电专业知识 题型:多选题 查看答案
具有三种电压的110kV变电所,通过主变压器各侧线圈的功率均达到该变压器容量的下列哪个数值以上时,主变压器宜采用三线圈变 具有三种电压的110kV变电所,通过主变压器各侧线圈的功率均达到该变压器容量的下列哪个数值以上时,主变压器宜采用三线圈变压器?( )A.10% B.15% C. 分类:供配电专业知识 题型:多选题 查看答案
阅读下面短文,掌握其大意,然后从各题所给的四个选项(A、B、C和D)中,选出最佳选项。When I entered Be 阅读下面短文,掌握其大意,然后从各题所给的四个选项(A、B、C和D)中,选出最佳选项。When I entered Berkeley, I hoped to 分类:供配电专业知识 题型:多选题 查看答案
This training program can give you a lift at work, ________ This training program can give you a lift at work, __________increase your inco 分类:供配电专业知识 题型:多选题 查看答案