质量为0.8kg的物体在水平地面上做直线运动，物体受到水平拉力和不受拉力时，物体 发布时间：2017-06-27 13:07 │ 来源：www.tikuol.com 题型：填空题 问题： 质量为0.8kg的物体在水平地面上做直线运动，物体受到水平拉力和不受拉力时，物体运动的速度图象分别如下图中的直线Ⅰ和Ⅱ所示，则物体所受水平拉力的大小是 ．
题型：填空题 完形填空。 China's Liu Xiang has shown that he is one ofthe world's 1 men! In the 28th Olympics,Liu Xiang _2 the 110-metre hurdles with 12. 91 seconds. It's as fast as the world record,and the best ever in the Olympics! It was the first men's athletics gold for China in the Olympics. "I 3 Asians can run fast,too," he said. Liu loved sports _4 he was a child in Shanghai. "He kept running and jumping every day. He never sat there _5_,"said his mother. In the fourth grade,Liu tried high jump. He was always the first to try a higher jump. He would jump until he 6 it! But people said he was not 7 enough. "I told my mother that I wanted to be in theOlympics," Liu said. Luckily, at the age of 15, Liu 8 his coach Sun Haiping. Sun thought he could be No. 1 in the110-metre hurdles.He was right. But young people love Liu not just for his sporting talent (才能) , _9 for his fashion (时尚).He likes singing with his friends. He sings like a karaoke star.He likes to make fun of his pimples (痘) on his face,"I would be better-looking i fl 10 them."( )1. A. fastest ( )2. A. beat ( )3. A. knew ( )4. A. because ( )5. A. lonely ( )6. A. made ( )7. A. high ( )8. A. rang ( )9. A. and ( )10. A. have B. slowest B. broke B. showed B. before B. loudly B. tried B. tall B. visited B. or B. didn't have C. tallest C. won C. believed C. when C. quietly C. lost C. fast C. met C. however C. stop D. youngest D. kept D. hoped D. after D. quickly D. failed D. strong D. missed D. but also D. keep 查看答案
题型：填空题 老王在某证券交易部买了某上市公司的股票20000股，投入资金32万元。下列说法正确的有：[ ]①老王变成了该公司的股东②老王在自己资金紧张时，可以向公司提出退还自己的股金③老王在自己资金紧张时，在股市上卖出自己的股票④老王可以定期从该公司获得固定的收益A、①④B、②③C、①③D、②④ 查看答案
