While paralleling two AC generators using synchronizing lamps only, both lamps will go dark when the generators are （）.<br>A:running at the same speed<br>B:grounded<br>C:of the same polarity<br>D:in phase

While paralleling two AC generators using synchronizing lamps only, both lamps will go dark when the generators are （）.
A:running at the same speed
B:grounded
C:of the same polarity
D:in phase

出自：海船船员证

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10252701】个 (题库试题定时更新)