当采用梁宽大于柱宽的扁梁作为框架时，下列要求哪一项是不合理的？（） A.不宜用一二级 发布时间：2018-03-16 20:30 │ 来源：www.tikuol.com 题型：单项选择题 问题： 当采用梁宽大于柱宽的扁梁作为框架时，下列要求哪一项是不合理的？（）A.不宜用一二级框架结构B.梁中线宜与柱中线重合C.扁梁应双向布置D.梁宽不应大于柱宽的二倍
题型：单项选择题 完形填空。 How do you spend your weekends? On Saturday moming I 1 get up very late. I wash my faceand then go out to do morning exercises to keep 2 . After I have my breakfast, I often go to a shoppingcenter 3 my mother at 8:20 in the morning. The shopping center is not near my house, so we usually 4 there. When we 5 there, it isusually about 9:30. The shopping center is new 6 big. There are many kinds of things there, such as TVs, fridges, computers, clothes, food and drinks. I like the clothes there. They 7 very nice. There are usually many people there. Parents have to 8 their children well because it's too crowded there and children may get lost in it. Why do 9 people go there to buy things? Because the things there are usually good and cheap. There are also many places you can play in. It's a lot of fun 10 shopping in it. ( )1. A. hardly ( )2. A. healthy ( )3. A. for ( )4. A. walk ( )5. A. get ( )6. A. so ( )7. A. look ( )8. A. look like( ) 9. A. a lots of ( )10. A. doing B. usually B. health B. to B. run B. get to B. and B. sound B. look forB. many B. does C. never C. unhealthy C. with C. take a bus C. get from C. but C. smell C. look afterC. any C. did 查看答案
题型：单项选择题 涡轴发动机进气装置通常为收敛形，其主要目的是（）。A.增加进入发动机的空气流量B.减少进气过程中的气流分离，增加发动机的工作稳定性C.完成进气过程的动力压缩，提高发动机的经济性 查看答案