单项选择题
Given that the magnetic circuit of AC electromagnet. Th...
单项选择题Given that the magnetic circuit of AC electromagnet. The voltage U is constant . How will the coil current I change when the air gap length increases ( ). A、increase B、decrease C、remain unchanged D、not sure
下列名词中,哪些是食物名词? A、das Brot B、die Mensa C、die Wurst D、die...
多项选择题下列名词中,哪些是食物名词? A、das Brot B、die Mensa C、die Wurst D、die Kartoffel
千百年来,中国人讲情重义、先义后利,这已经成为中国人的道德准则和行为规范。 For thousands of ...
单项选择题千百年来,中国人讲情重义、先义后利,这已经成为中国人的道德准则和行为规范。 For thousands of years, Chinese people have been the moral code, and code of the conduct of the Chinese people to value friendship and justice before interests. A、正确 B、错误