甲、乙两人以匀速绕圆形跑道按相反方向跑步,出发点在直径的两个端点.如果他们同时出 发布时间:2017-07-01 17:33 │ 来源:www.tikuol.com 题型:填空题 问题: 甲、乙两人以匀速绕圆形跑道按相反方向跑步,出发点在直径的两个端点.如果他们同时出发,并在乙跑完100米时第一次相遇,甲跑一圈还差60米时第二次相遇,那么跑道的长是______米.
题型:填空题 —Shall I give you a hand with this as you are so busy?—Thank you. A.of course you canB.If you likeC.it’s up to youD.it couldn’t be better 查看答案
题型:填空题 根据对话内容,从方框内选择恰当的句子填入对话相应的空白处,使对话完整,合乎情景(有两个多余选项)。Peter: Hello, Linda. Nice to meet you.Linda: Hello, Peter.小题1: Peter: You see, the summer holiday is coming.小题2: Linda I’m going to travel to Xi’an Expo 2011.Peter: 小题3: By the way, will you go there alone?Linda: 小题4: My cousin will go with me.Peter:小题5: Linda: We’ll start on June 18. Peter: I think you will enjoy yourselves there.A. How do you do?B. it’s a good place to travel.C. What’s your plan for it?D. When will you go?E. No, I won’t.F. Nice to meet you, too.G. I’ll there by train. 查看答案
题型:填空题 如图所示为一磁流体发电机示意图,A、B是平行正对的金属板,等离子体(电离的气体,由自由电子和阳离子构成,整体呈电中性)从左侧进入,在t时间内有n个自由电子落在B板上,则关于R中的电流大小及方向判断正确的是( )A.I= ,从上向下B.I= ,从上向下C.I= ,从下向上D.I= ,从下向上 查看答案