大学普通物理实验超声波测定声速，思考题谁会，大一新生求解答 1、把表笔的头和地线接起来，如果看不到一条水平线，调整示波器的位置旋钮，看看是不是跑屏幕上面或下面去了？如果没有看看亮度，是不是太暗了？再没有就报修吧；2、超声波发射的轴线很细，你又看不到，如果从远处往近处移动，你恐怕不易找到轴线在哪；3、这似乎是微波的问题，对于超声波，我还真没注意还有波节和波腹，你确定这是超声波的问题吗？4、向右是X轴，也是时间轴.如果你习惯倒着画，我没意见，但我相信大多数人看着都不会习惯.
求湘教考苑·单元测试卷·英语·九年级上册答案 I study in the No.I middle school，where there are three grades and thirty-two classes.It is not big but very beautiful.In the center of the school there is a new teaching building，which is very clean and beautiful.The lab building and the library are to the east of the new building.There all kinds of book in the library.You can enioy them as many as you like.South of the new building lies a playground and it’s very big.On the playground，you can have sports such as football.basketball.You’d better play basketball as there are four basketball grounds in our school，You can enjoy yourself very much.There are many trees in our school.Grass is everywhere.In front of the new building there are two gardens in which，there are flowers of all colours.We are studying hard in our school，Our life is happy and intcrcsting.I love our school very much.我在我的中学学习，那里有三级三十二班。它不是很大但很美丽。在学校的中央有一个新的教学楼，这是非常干净和美丽。实验楼和图书馆是新建筑的东。。
在湖南衡阳市耒阳市正源读书是一种什么样的体验？ https：//www.zhihu.com/answer/982668 910 ？ 41 ？ ？ 添加评论 ？ ？ ？ 喜欢 ？ 广告？ 匿名用户 3 人赞同了该回答 就这么说吧，如果你不是穷途末路。
