【简答题】如图10所示的电路中,电源电压、灯丝电阻都保持不变灯L标有“6 V 3 W”字样,灯泡的电阻_____Ω;当开关S闭合,滑动变阻器的滑片P在a、b两点间移动时,电压表示数的变化范围是5~8 V,且滑片P位于b点时灯L的功率是滑片位于a点时灯L功率的16倍,电源电压是________V。
【简答题】问句答语匹配。 ( ) 1. Who wants to go there? ( ) 2. Would you play the piano? ( ) 3. Do you wear pants? ( ) 4. What's this? ( ) 5. What's the temperature? A. It's a bus. B. Yes, I do. C. ...
【简答题】连线。 1. What time is it now? 2. Who wants to go shopping today? 3. What does he have? 4. Do you have ears? 5. May I take your picture? A. Sure! B. Yes,I do. C. It's 2:30. D. I do! E. He has a panda.
【单选题】如题图所示电路中,电源电动势 E 1 =E 2 =6V,内电阻不计,R 1 =R 2 =R 3 =3Ω,则 A、B两点间的电压是( )。
【单选题】To tell you the truth, everyone, including me, won’t _____ your selfness and rudeness.
【单选题】The corridors(走廊)was so narrow that I had to myself against the wall to let them pass.
【单选题】王某,因患扁桃体炎而采用青霉素治疗,给药后1分钟,人面色白、烦躁不安、脉搏细弱血压下降,并伴有呼吸困难,诊断为过敏性休克,应首选下列何药治疗