【简答题】已知m∈R,复数z= m(m+2) m-1 +( m 2 +2m-3)i ,当m为何值时, (1)z∈R; (2)z是虚数; (3)z是纯虚数; (4) . z = 1 2 +4i .
【单选题】“Of course, the rivers and valleys and borders were long ago mapped; our blank spaces are the few remaining holes in the global communications network. ... But quite soon those gaps will be filled.” T...
【简答题】已知 z 1 = m 2 - 3 m + m i , z 2 = 4 + (5 m + 4)i ,其中 m ∈ R , i 为虚数单位,若 z 1 = z 2 ,则 m 的值为 ________ .
【单选题】已知z 1 =m 2 -3m+m 2 i,z 2 =4+(5m+6)i,其中m为实数,若z 1 -z 2 =0,则m的值为( )
【判断题】Our blank spaces are the few remaining holes in the global communications network. --- But quite soon those gaps will be filled.(Para. 5) The tone of these sentences are cheerful.
【单选题】已知 z 1 = m 2 -3 m + m 2 i, z 2 =4+(5 m +6)i,其中 m 为实数,i为虚数单位,若 z 1 - z 2 =0,则 m 的值为
【简答题】通常,绝对湿度的水平分布与纬度有关,其中绝对湿度最大的地区出现在:( )地区
【单选题】从监理大纲、监理规划和监理实施细则内容的关联性来看,监理规划的作用是( )。
【简答题】已知m∈R,复数 z= m(m+2) m-1 +( m 2 +2m-3)i ,若 . z = 1 2 +4i ,则m=______.
【单选题】当船舶沉到水下工____处时,静水压力释放器被打开,EPIRB浮到水面并自动启动,发送