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问题 单项选择题

某7度抗震设防的高层钢筋混凝土框架结构，抗震等级为二级，地上10层，柱混凝土强度等级为C35(fc=16.7N/mm2，ft=1.57N/mm2)。

该框架第五层中柱节点，其纵、横梁及柱截面尺寸如图2-19所示。抗震设计时，节点左右梁端相同时针方向组合的弯矩设计值之和∑Mb=450kN·m(为较大值)。节点上、下柱反弯点之间的距离Hc=4.7m。梁纵向钢筋的as=a’s=35mm。试问，1-1剖面方向节点核心区组合的剪力设计值Vj(kN)，与下列何项数值最为接近

A．549

B．602

C．657

D．722

答案

参考答案：C

解析： 由《高层建筑混凝土结构设计规程》(JGJ 3—2002)附录C中式(C.1.1-2)
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单项选择题

The price of maple syrup has jumped front 22 dollars a gallon three years ago to 40 dollars a gallon today. It can be concluded that maple-syrup harvesters have been artificially inflating prices and that governmental price regulations are necessary to control rising prices.
Which of the following, if true, casts the most doubt on the conclusion drawn above

A．The government already requires maple-syrup harvesters to submit their facilities to licensing by the health department.

B．Insect infestation and drought have stunted the growth of syrup-producing maple trees and caused leas-abundant syrup harvests.

C．Maple syrup is produced in rural areas that suffer from high unemployment.

D．Technological improvements in maple-syrup harvesting have reduced production costs.

E．(E) Maple-syrup prices have risen many times in the past, though never before at the rate recently observed.
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单项选择题

根据1871年开始生效的德意志帝国宪法文本，这个新的民族国家称为“德意志联邦”，其最高首脑为“联邦 * * ”。直到威廉一世加冕时，人们才从发布的皇帝宣言中得知，“联邦 * * ”改成了“德意志皇帝”。原来，威廉一世希望自己被称为“德国皇帝”，这一要求遭到巴伐利亚国王和符滕堡国王的反对，最后威廉一世接受了“德意志皇帝”。上述材料表明（）

A.德意志帝国不适合建立联邦制

B.德意志帝国仍是封建专制政体

C.德意志帝国分裂割据局面仍没有消除

D.德意志帝国存在集权与分权主义之争
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