单杠骑撑前回环前倒时前腿向前迈出主要是为了（）。A、增加动量 B、加大重力矩 C、增 发布时间：2017-05-02 21:11 │ 来源：www.tikuol.com 题型：单项选择题 问题： 单杠骑撑前回环前倒时前腿向前迈出主要是为了（）。A、增加动量B、加大重力矩C、增加位能D、加大惯性
题型：单项选择题 阅读理解。 Many people like to search the Internet. Exploring the Internet is one of the most important activities of theday. The Internet brings the outside world closer to people's homes. Some people say the world is smaller than before because of the Internet. What's going on in other countries? How do people live in places far away? Is there a good sports game somewhere? What's the life in the deepest part of sea? If you want answer all these questions, just come to the Internet. Of course, people can also learn through reading or listening to the radio. But with the Internet they can learn better and more easily. A lot of information can be collected at a great speed. Can we go shopping without leaving home? Can we see a doctor without going to the hospital? Can we study without going to school? Can we draw money without going to bank? All these things seemed to be impossible, but now they have become quite possible. The Internet helps us open our eyes. The Internet also helps open our minds. The Internet often gives us new ideas. In a word, it helps us in many ways. Great changes have taken place in our life since the appearance of the Internet. 1. Some people say the world is smaller than before because _____________ .[ ]A. all people kike to search the Internet. B. the Internet makes the earth smaller in size C. the Internet brings the outside world closer to them 2. The sentence "The Internet also helps us open our mind." means _______ .[ ]A. the Internet is new to us B. something is wrong with our minds C. we can learn more with the help of the Internet 3. We can't ________ through the Internet.[ ]A. know a good sports match somewhere B. cook the meal C. know a lot of information 4. This passage has told us __________.[ ]A. it's helpful to explore the Internet B. not to explore the Internet any more C. to stop reading and to explore the Internet 5. Which of the following sentences is Not true?[ ]A. The Internet can get the information faster than reading B. Without leaving home, we can get money from the bank by radio C. People can learn better and more through the Internet 查看答案
题型：单项选择题 女性，40岁。车祸伤后昏迷1小时入院。查体：P60次/分，R12次/分，BP170/100mmHg。瞳孔左：右=4mm：2mm，左侧光反应消失，右侧肢体偏瘫。GCS7分。检查显示：左额、颞底面广泛脑挫裂伤伴左额、颞叶脑内血肿，量约60ml，同侧脑室受压，中线向右移位1．5cm。考虑受伤出血的机制是（）A.左额、颞部位的冲击伤所致B.左额、颞部位的对冲伤所致C.左枕部的加速性损伤所致D.右枕部的减速性损伤所致E.以上均正确 查看答案
题型：单项选择题 下列说法正确的是[ ]A.当物体受到的合外力为0时，它的机械能一定守恒 B.当物体做匀速直线运动时，它的机械能一定守恒 C.机械能守恒时，可以有力对物体做功 D.当物体的动能最大时，它的重力势能一定最小 查看答案