棕榈叶片可以通过什么方法进行叶的艺术加工?()。A.撑 B.弯 C.撕 D.剪 发布时间:2017-07-29 07:57 │ 来源:www.tikuol.com 题型:单项选择题 问题: 棕榈叶片可以通过什么方法进行叶的艺术加工?()。A.撑B.弯C.撕D.剪
题型:单项选择题 题23~25:设有一横截面为四边形的格构式自立式铁架,其底节间的人字形腹杆系由两个等边角钢80×7组成的T形截面,如题图所示。钢材为Q235-B·F,其斜撑所受的轴心力设计值N=±150kN。假定人字形腹杆与节点板的连接改用8.8级的承压型高强度螺栓,其接触面为喷砂后涂无机富锌漆。应选用()项公称直径的螺栓。A.M20B.M16C.M22D.M24 查看答案
题型:单项选择题 根据对话内容,从下列方框中选择适当的句子补全对话,使对话内容完整、通顺(其中有两项为多余选项) 。Check-in Clerk:May I have your ticket, sir?Edgar: 1.____ Check-in Clerk:I'm sorry. This is a Coach Class ticket. This is the Business Class check-in.Edgar: 2._____ .Check-in Clerk: Flight CA 489 to Vancouver? 3._____Edgar: Oh, no! I have to be on it.Check-in Clerk: Just a moment. Yes, you're OK. 4._____Edgar: Thank goodness for that.Check-in Clerk: Do you have any baggage?Edgar: Yes. Two pieces.Check-in Clerk: 5.____Edgar: Yes, I did.Check-in Clerk: Fine. Put them on the scales.A. Here you are.B. You'd better hurry.C. I can check you in here.D. But my flight's just leaving.E. I think you're too late.F. Did you bring your passport, please?G. Did you pack the bags yourself? 查看答案