有一个均匀的圆柱形木柱,直立在水平地面上如图所示.现欲使木柱的C点稍离地面,应在 发布时间:2017-07-08 00:49 │ 来源:www.tikuol.com 题型:问答题 问题: 有一个均匀的圆柱形木柱,直立在水平地面上如图所示.现欲使木柱的C点稍离地面,应在哪一个点施加力,才能使施加的力最小,请在图上画出这个最小力的作用点及方向.
题型:问答题 从方框中选出最佳选项完成下面的对话。A: I’m tired of watching TV. 小题1: B: Good idea. What’s on this week?A: Let me see. 小题2: It’s very popular.B: Really? What’s it about? A: 小题3: It was written in 1896.B: Why is it so great? A: The story is sad but exciting.B: 小题4: A: 50 yuan each.B: That’s a little expensive, but I don’t care. 小题5: A: OK, Let’s meet at my house. 查看答案
题型:问答题 —Can you speak English, Tom? —Yes, but only _ __ . [ ]A. little B. a little C. much D. lots of' 查看答案