【简答题】在受控热核研究中,需要的强大脉冲磁场是靠强大的脉冲电流产生的。如图所示电路中C=2000μF,L=4nH,r=0.4mΩ,直流电压U 0 =15kV,如在t<0时,开关S位于“1”,电路已处于稳态,当t=0时,开关由“1”闭合到“2”。
【单选题】His face looked _____ to me,but I just couldn’t remember
【简答题】red: His face__________ when we all looked at him admiringly.
【简答题】Charlie looked at himself in the mirror. He found his face was red. He washed it with some cold water. He didn’t leave the bar until he felt 小题1: little better. Then he said goodbye 小题2: his friends a...
【单选题】若有定义 int a[2][3]; ,则 以下选项中对 a 数组元素正确引用的是【 】。
【简答题】His face __________ when we all looked at him admiringly.
【简答题】___________ 可用于治疗新生儿窒息 。