【判断题】在同等情况下,同一点发生相间短路时,其两相短路电流一般为三相短路电流的2/3倍。()
【多选题】内螺纹牙顶所在的圆柱面直径为( ),牙顶( ),能触及,所以用( )绘制。
【单选题】同等条件下某一位置发生三相相间短路与两相相间短路的电流大小关系说法正确的是
【单选题】患者女性.27岁。月经周期为28天,现在是月经干净后第8天。宫颈黏液涂片检查结果是典型羊齿植物叶状结晶,表明其所处的阶段为
【单选题】Which of the following is t he trend of media development ?
A.
All of them are building a multi-media platform .
B.
T he competition of media becomes more and more complex.
C.
Merger and takeover will continue to occur .