题目: 本征半导体的特征主要有哪些? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0205/6018ac3a8b84e6132ac8a70bbf12788c.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:完形填空 完形填空。 John was the only son of a rich American businessman. Usually he _1 to school by the driver 2 his father's beautiful car before the driyer took John's father to his office. One evening his fathertold him that he had to go to the airport early 3 , 4 he would need the car at the time that John had to go to school. 5 John's mother had another car, she would still be 6 when he 7 the house. "Well, how will I get to school if you need your car and Mummy is still in bed?"John asked. His fatherthought this was a good opportunity (机会) to teach him a lesson about how hard 8 for many peopleof the world, so he answered, "You'll go in the same way 9 every 10 child in the word goes-on a bus. "( )1. A. went ( )2. A. by ( )3. A. next day ( )4. A. but ( )5. A. Since ( )6. A. in bed ( )7. A. leave ( )8. A. was life ( )9. A. of ( )10. A. the other B. came B. with B. tomorrow B. so B. But B. in the bed B. had to leaveB. the life wasB. such B. other C. was taken C. in C. in a day C. because C. Though C. on the bed C. left for C. life was C. so C. another D. was brought D. on D. the next day D. for D. Because D. on bed D. had to leave for D. was the life D. as D. others 查看答案
题型:多选题 为了求得楼房的高度,在不计空气阻力的情况下,让一个石块从楼顶自由落下,测出下列哪个物理量就能计算出楼房的高度( )A.石块下落第一秒所用的时间B.石块落地前的瞬时速度C.石块落地前最后1s内的位移D.石块通过最后1m位移的时间 查看答案