KCLF11系列励磁装置电压表指示为零是因为()。
A: VS、VS导通
B: VS、VS关断
C: V导通
D: V关断
A: VS、VS导通
B: VS、VS关断
C: V导通
D: V关断
举一反三
- KCLF11系列励磁装置电压表指示为零是因为()。 A: VS1、VS2导通 B: VS1、VS2关断 C: V导通 D: V关断
- 前侧壁心肌梗死出现特征性ECG改变的导联是() A: V1、V2、V3 B: Ⅱ、Ⅲ、aVF C: V、V4、Vs D: Ⅰ、aVL、V、Vs E: Ⅰ、aVL
- 干密度的定义式为:()。 A: m/Vs B: ms/V C: ms/Vs D: ms/Va
- 土的饱和度Sr的定义式为( )。 A: Vw/ Vv B: Vw/v C: Vw/Vs D: Vs/Vw
- 【单选题】In the short transmission line model, the relative size of the sending end voltage Vs and the receiving end voltage Vr depends on the load power factor. Which of the following is correct? Power factor = 0.8 (leading) Power factor = 1 Power factor = 0.8 (lagging) A Vs > Vr Vs < Vr Vs < Vr B Vs < Vr Vs = Vr Vs < Vr C Vs < Vr Vs = Vr Vs > Vr D Vs > Vr Vs > Vr Vs > Vr A. See item A in the problem B. See item B in the problem C. See item C in the problem D. See item D in the problem