对称星形负载 R 接于 对称 三相三线制电源上,如图 所示。若电源线电压为 380 V ,当开关 S 打开后电压表的测量值为 ( ) 。 (a) 380 V (b) 220 V (c) 190 V ( d ) 110V
A.
380V
B.
220V
C.
190V
D.
110V
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】Complete the sentences with the given words in their proper forms. 1. The nursery is bright and _________ with plenty of toys. ( cheerfully) 2. The retired people usually take up a hobby such as raisi...
【简答题】B. Fill in each of the following blanks with the proper form of the given words. A. operate B. confused C. specialist D. pushy E. combined F typical G registration H. employed 1. His fat...
【简答题】听下面一段材料,回答1-4题。 1. Who is the speaker? A. A news reporter B. A specialist in oil spill prion C. An oil company technician 2. What is the main topic of the report? A. Where the oil spoil occurred ...
【简答题】combined typical operate Pushy employed registration confused specialist 1. His father is an eye_____________. 2.__________ parents get their children into the best schools. 3. J...
【简答题】News Report-1 1. A. The man in the car was absent-minded. B. The test driver made a wrong judgement. C. The self-driving system was faulty. D. The car was moving at a fast speed. 2. A. They have done ...