问题
选择题
| 如图所示，矩形线圈有N匝，长为a，宽为b，每匝线圈电阻为R，从磁感应强度为B的匀强磁场中以速度v匀速拉出来，那么，产生的感应电动势和流经线圈中的感应电流的大小应为（ ） A．E=Bav， B．E=NBav， C．E=Bav， D．E=NBav，  |
答案
答案：D
搜题请搜索小程序“爱下问搜题”
| 如图所示，矩形线圈有N匝，长为a，宽为b，每匝线圈电阻为R，从磁感应强度为B的匀强磁场中以速度v匀速拉出来，那么，产生的感应电动势和流经线圈中的感应电流的大小应为（ ） A．E=Bav， B．E=NBav， C．E=Bav， D．E=NBav， |
答案：D
五个外国留学生今年七月份想到中国不同的城市旅游，请仔细阅读第56-60题中的个人情况说明，并从A至F六个选项中最适合他们的城市（其中一项为多余选项）。 小题1:Joe comes from Moscow. He has studied in Beijing for two years. So he misses his hometown very much. He hopes to go to a city where he can find the feeling of returning home. 小题2:Mary is an American girl. She likes going shopping. This year she’ll graduate from a famous Chinese college. So she is planning to travel to a city where she may find a job. 小题3:Henry is from Canada. He is interested in surfing and diving(潜水). But the city in which he is living is far from the sea. So he is expecting to get to a place where he can do these activities and taste bananas and pineapples(菠萝). 小题4:Rosa comes from Britain. She cannot stand hot weather. And she thinks some Chinese cities have too much pollution. So she wants to go somewhere clean and peaceful. 小题5:Timmy comes from Japan. He has great interest in taking photos. He is looking forward to staying close to nature. He even wants to take a boat while taking photos. However, he doesn’t like hot food.
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