【单选题】温度一定时,金属导线的电阻与( )成正比、与截面积成反比、与材料的电阻率有关。
【判断题】Teaching was done in the form of lecture
because books were expensive in the Middle Ages of Europe.
【单选题】温度一定时,金属导线的电阻于( )成正比、与截面积成反比、与材料的电阻率有关。
【简答题】小题1: Mr. Wu spent a lot of time______(解释)why he was late. 小题2:The ______(手术)done by Doctor Ma were all successful. 小题3: We have ______(更新鲜的)air in the country than in the city. 小题4:My teaching style i...
【简答题】第二节 完形填空(共20小题,每小题1.5分,满分30分) 阅读下面短文,掌握大意,然后从36-55各小题所给四个选项(A、B、C、D)中,选出最佳选项,并在答题卡上将该项涂黑。 Not long ago, someone asked the dad of a young pop star what his son would have done if he hadn’t become a sin...
【简答题】温度一定时,金属导线的电阻与( )成正比、与截面积成反比,与材料的电阻率有关。
【简答题】阅读理解。 When I started teaching at school, I was sure I would change the world and touch children who needed love. Although my students seemed to respond pretty well to my teaching, there was a small gr...