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单项选择题

对7层抗震框架结构进行结构布置时，下列( )要求是错误的。

A.截面的宽度和高度，层数不超过2层或四级时，均不宜小于300mm
B.一、二、三级且层数超过2层时不宜小于400mm
C.剪跨比宜大于2
D.截面长边与短边的边长比不宜大于4
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猪舍间的距离确定要同时考虑光照、通风、防疫、防火和节约土地等因素而定。我国大部分地区猪舍间距为猪舍高度的多少倍?(        ) A.
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George and Margaret and their children?21?at 140 Davis Street,22?the street from a small park.Their house is just off the main road.George usually goes to work by bus,but sometimes he goes?23?his car.The children usually go to school by bus.
The Glenns′house is?24?hidden among the trees.It has small bushes(灌木)planted around it.There is a fence?25 it and the house next door.It is a two-storey house,26 the living room,dining room andkitchen(厨房)on the first floor,and the bedrooms and bathroom on the second floor.
The Glenns spend a lot of time at home.27 now they are at dinner.Conversation(谈话)at the Glenns′house is usually lively at meal time.The children are discussing trips they would like to take.Susan,who has never?28?on a plane,says,"I′d like to?29 a plane to California."Henry,who is elder,thinks it would be fun to be on a?30,heading for adventure(冒险)in Africa.Teddy,the youngest child,says,"I want to go around the world on a train."His elder brother and sister are still trying to?31 to him why this is not possible?32?their mother says,"Children,you′ve spent too much time at the table.Henry and Susan,go and?33 your homework.Teddy,it′s time you were in bed."
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第29题答案是查看材料
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单项选择题
对于地震区底层大空间剪力墙结构的设计，下列说法不正确的是( )。
A.在框支梁上的一层墙体内不宜设置边门洞
B.框支梁上的一层墙体内，在对应中柱上方可设门洞
C.落地剪力墙和简体的洞口宜设置在墙体中部
D.框支梁截面宽度不小于400mm，高度不应小于跨度的1／6
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