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框架―剪力墙结构中剪力墙的布置一般按照“均匀、对称、分散、周边”的原则布置:

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下列说法正确的是

A. 剪力墙宜均匀对称地布置在建筑物的周边附近、楼电梯间、平面形状变化及恒载较大的部位;在伸缩缝、沉降缝、防震缝两侧不宜同时设置剪力墙。
B. 纵向剪力墙宜布置在结构单元的中间区段内。房屋纵向长度较长时,不宜集中在两端布置纵向剪力墙。
C. 楼梯间、竖井等造成连续楼层开洞时,宜在洞边设置剪力墙,且尽量与靠近的抗侧力结构结合,不宜孤立地布置在单片抗侧力结构或柱网以外的中间部分。
D. 纵向剪力墙宜布置在结构单元的两端。房屋纵向长度较长时,应该集中在两端布置纵向剪力墙。

下列说法正确的是

A. 框架-剪力墙结构平面布置方案中,剪力墙应该集中在建筑物的楼梯和电梯进行布置,其它地方可以完全不布置
B. 框架―剪力墙结构中剪力墙的布置一般按照“均匀、对称、分散、周边”的原则布置
C. 剪力墙的布置宜分布均匀,单片墙的刚度宜接近,长度较长的剪力墙宜设置洞口和连梁形成双肢墙或多肢墙,单肢墙或多肢墙的墙肢长度不宜大于8 m。
D. 剪力墙的布置应该连成一片越长越好,保障其有更大的承载力,墙与墙之间刚度有较大差距是正常的

①Could anybody tell me what the meaning of travelling is?②I don't accept such answers as "relaxing, having fun, taking a break". Everybody knows that travelling is so tiring and how could you possibly relax yourself from it? It doesn't make any sense for me.③For me, the most impressive feeling I have in the strange cities should be I have realized that it is real that there are so many people living a different life in other cities. it sounds normal. Actually, we all know that. But when you are looking at these things in person, in your eyes, the feeling is so weird and the first thing that comes to your mind is that how could they survive? I am sure when they are going to see my place, they would have similar feeling as mine.④I am a sensitive person, which means I am so easily to be moved by some things. I find my life full of strange things and I get sad frequently if I am alone for a long time. Life is just as miserable as an extremely boring TV series for me. However, when I am looking at other people doing their own businesses, I find my troubles are getting smaller and smaller. Actually, what you are doing means nothing for other people in the world. You are just one of the interesting stories that people would like to talk about to have fun. Why should you stick to your bad mood? I begin to understand maybe I should not take things too seriously.⑤Some people like travelling for experiencing something new and fresh to themselves. For these people, travelling is like a wonderful dream. I used to agree with this idea. Now I change my mind. The point is, "do I really need so much experience?" I doubt. Of course, it is great to explore different countries and cultures. But do I really know my own country and place well? Without deep thinking, all the places are just some things you use to pass the time of your life, which makes you feel better for not wasting your time. That is something in my heart when I finished the book My Name Is Red. The author has not been to any other cities for his life. He loves Istanbul, his hometown. That is amazing to know one city and its history and character so well. This only happens when you spend your life to love that city.⑥Similar situation also happens in relationships. When people are travelling, they could find different cities have their own special attractions and they tend to fall in love with that city. The truth is you could not be tourists for the whole life. You have to pick one to live and spend your rest of life in it. Is it similar to relationship? You have been to so many beautiful places and you have seen so many different charming ladies. You have experienced the passion of Hawaii and coldness of Moscow. You have enjoyed bagpipes of Scotland and flowers of Switzerland. You never miss one fantastic movie or book. You love all the brilliant music. But when will you decide to settle down? Could you possibly stop at one of them forever? Maybe the true meaning of travelling is that you finally learn to appreciate the things you have already had and cherish them for the rest of your life.

A. Most people like to travel too.
B. Other people live a different life.
C. Other people don't like travelling.
D. Other people are doing their own businesses.

机械制造中最常用的公差等级是((______ ))级。

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