【简答题】在三相四线制照明电路中,相电压是 V,线电压是 V。
【判断题】在交流电路中,若地电位为零,由于零线和大地相接, 故零线的电位始终为零。( )A. 对 B. 错
【单选题】China launched its first manned spacecraft, Shenzhou V, on October 15, China the third country to successfully send a person into space.
【判断题】在交流电路中,若地电位为零,由于零线和大地相接,故零线的电位始终 为零
【简答题】阅读理解。 The seasons in Australia are not like those of China. When it is winter in China, it is summer there. Australia is a southern (南部的) country. It is in the south (南方) of the world. June, July and ...
【简答题】四书分别是《论语》、《大学》、《孟子》、《 》
【多选题】Read the following profile of Huawei and choose the right anwers. Huawei‘s profile.docx What are right in the following statements about Huawei ?
B.
it is involved in information and communications techonology
C.
It isdedicated to innovation