【单选题】在采用动圈式模拟万用表的欧姆挡检测二极管的极性时一般使用______挡,这是因为______。
A.
. R × 100 /防止过压反向击穿二极管
B.
. R × 100 /防止二极管导通时正向电流过大而烧坏
D.
. R × 1 /防止二极管导通时正向电流过大而烧坏
【单选题】患者右下肢外伤后,未得到正确的处理,而导致破伤风,为其伤口换药后污染敷料处理方
【简答题】Someone says “Time is money”, but I think time is 1 important than money , why? Because money is spent ,we can get it back .However, when time is2,it will never 3.That is 4 we must not waste time . 5 ...
【简答题】完形填空。 Someone says, 'Time is money.' But I think time is 1 important than money. Why? 2 when money is spent, we can get 3 back. However, when time is 4 , it will never return. That is why we mustn't w...
【简答题】听短文,填入所缺单词。 During Thomas Edison's lifetime he 1. 1093 inventions. Why was Edison 2. to make so many inventions? Because he never 3. up, and did his best to find the right ways to solve the problems. ...
【简答题】红黄蓝选择性地将自己的色彩反射给读者,通常被称为( );红绿蓝是光线的三原色,它们合成起来就形成了白色光。这种通过红色、绿色、蓝色光混合色彩的理论,就是数码摄影所使用的色彩模式。红绿蓝也就是( )。
【单选题】题: 锥形轴与轮毂的键联接宜用()联接
【单选题】患者右下肢外伤后,未得到正确的处理而导致破伤风,为其伤口换药后污染敷料处理方法是