桂花象征着金银富贵、（）、文思长进和中秋团圆。A、官运亨通 B、工作顺利 C、雍容华 发布时间：2017-07-17 18:46 │ 来源：www.tikuol.com 题型：单项选择题 问题： 桂花象征着金银富贵、（）、文思长进和中秋团圆。A、官运亨通B、工作顺利C、雍容华贵D、子孙满堂
题型：单项选择题 选用方框中短语动词的适当形式填空，每个只能用一次。Run out of, cheer …up, set up, clean up,take away, write down,call up, come up with, give in, take offl. The plane ______ on time in spite of fog2. Wait a minute, I'II______ your telephone number.3. After the party, they have to______ the room．4. He looks sad. Let's______ him______ .5. He has______ his money, so he has to ask for some from his parents.6. Tomorrow is her birthday. She is______ all her good friends to come to her birthday party now.7.They decide to______ a new school in that village.8. Can you______ a good idea about the activity?9. She's a brave player; she never______.10. The books must not be______ from the library. 查看答案
题型：单项选择题 原来静止的质子经加速电压加速之后，垂直进入磁感应强度为B的匀强磁场中，做半径为r的匀速圆周运动，则下列叙述正确的是[ ]A．若半径r保持不变，加速电压U越大，则需要的磁感应强度B越大B．若加速电压U保持不变，磁感应强度B越大，则半径r越大C．若磁感应强度B保持不变，加速电压U越大，则半径r越小 D．若磁感应强度B保持不变，加速电压U越大，则质子做圆周运动的周期越大 查看答案