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问题 单项选择题

某5m高轴心受压砖柱，e＝0，上下端均为不动铰支座，采用MU10和M5的混合砂浆砌筑，截面尺寸为490mm×490mm。

该柱受压承载力设计值与（）项数值相近。

A．292.7kN

B．213.5kN

C．241.4kN

D．255.6kN

答案

参考答案：A

解析：

f=1.50 N/mm2 A=0.49×0.49=0.24m2＜0.3 m2

根据《规范》3.2.3条第2款得调整系数γa=0.7+0.24=0.94，调整后f=0.94× 1.50=1.41N/mm2

由《规范》表5.1.2得γβ=1.0，H0=5m

无筋砌体的承载力：N≤φ0fA=0.865×1.41×240000=292.7kN

完形填空

根据短文内容和所给首字母提示，写出合适的单词（每空0.5分，共5分）

Mr. Green, a man of fifty-two, was a gardener(花匠). He’s good at g  1  flowers and he’s one of the b  2   gardeners in the town. Last year he c  3   to work for Mrs. Stone, a rich fat old woman.

Mrs. Stone knew n  4   about gardens, but she thought she knew a lot, and she always told the old gardener to do w  5  she said. Sometimes he listened t  6  her, but sometimes he didn’t.

Once Mr. Green got very a  7   with Mrs. Stone and called her a sow(母猪). Mrs. Stone d  8 like it and went to tell it to her friend, a judge(法官). The judge made Mr. Green s  9  sorry to Mrs. Stone.

“Does that mean I can’t call the lady a sow(母猪) any more?” Mr. Green asked . “Yes,” answered the judge. “And can I call a sow(母猪) a lady, sir?” asked Mr. Green. “Yes, you can if you like.” Mr. Green l  10  at the fat woman and said, “Goodbye, lady.”
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单项选择题

葡萄糖在细胞溶胶内分解至丙酮酸的过程中，下列叙述中正确的是（）

A.在线粒体中进行的无氧呼吸

B.不产生二氧化碳

C.需在需氧条条件下进行

D.反应速度不受温度影响
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