【简答题】若复数z对应的点在复平面的第四象限内,则复数 i? . z 对应的点在第______象限内.
【简答题】Do you agree or disagree with the following statement? All students should be required to study art and music in secondary school. Use specific reasons to support your answer. According to the given t...
【简答题】若复数 满足 ,则复数 在复平面上的对应点在第 ▲ 象限.
【判断题】我们在自然界见到的各个物种的生态位,多数都是实际生态位。
【简答题】已知:复数z满足(z-2)i=a+i(a∈R). (1)求复数z; (2)a为何值时,复数z 2 对应的点在第一象限.
【判断题】在外电场的作用下,物质原子里的电子轨道相对于原子核发生位移,从而产生感应电矩的过程称为电子式极化。
【简答题】II. Write down the meanings of below words in Chinese. 1)ballet 6)typical 2)underneath 7)hang 3)spaceman 8)path 4)counter 9)consider 5)firefighter 10)journey
【简答题】Do you agree or disagree with the following statement? Face-to-face communication is better than other types of communication, such as letters, e-mail, or telephone calls. According to the given topic...
【判断题】异常耳垢的形成,一方面可能是因让婴幼儿躺着喝奶,另一方面可能是因洗澡后未做适当的处理,所以保持局部洁爽很重要