某框架结构抗震等级为一级，混凝土强度等级为C30，钢筋采用HRB33_爱下问搜题

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问题单项选择题

某框架结构抗震等级为一级，混凝土强度等级为C30，钢筋采用HRB335（Φ）及HPB235（（φ）。框架梁h₀=340mm，其局部配筋如题图所示。根据梁端截面底面和顶面纵向钢筋截面面积比值和截面受压区高度，试判断下列关于梁端纵向钢筋的配置，并指出其中（）项是正确的配置。

A．A_s1=3Φ25，A_s2=2Φ25

B．A_s1=3Φ25，A_s2=3Φ20

C．A_s1=A_s2=3Φ22

D．前三项均非正确配置

答案

参考答案：C

解析：

根据《高2010》第6.3.2—3条，A、B不满足

根据《高2010》第6.3.2—1条及《混2010》第7.2.1条：

或

不符合《高2010》第6.3.2—4条

选项C满足要求，所以正确答案为C

完形填空

A boy was walking home from school when he saw a large, tempting （诱人的）apple on one of the branches of an apple tree hanging out over a tall fence. The boy wasn’t much of a fruit-eater, 36 a bar of chocolate if given the choice,     37   , as they say, the forbidden fruit can be tempting. Seeing the apple, the boy wanted it. The more he looked at it, the   38   he felt and the more he wanted that apple.
39  as high as he could, but even as his tallest 40 he was unable to touch It. He began to 41 up and down , as high as he could, at the 42 of each jump stretching his arms to get the apple . Still it remained out of 43 .   Not giving up , he though , if only he had something to 44 on . His school bag wouldn’t give enough height and he didn’t want to 45  the things inside , like his lunch box , pencil case , and Gameboy. Looking  46 , he hoped he might find an old box , a rock , or ,   47 luck , even a ladder , but it was a tidy neighborhood and there was nothing he could use. He had tired everything he could think to do.   48  seeing any other choices , he gave up and started to walk   49 . At first he felt angry and disappointed thinking about how hungry he had become from his 50 , and how he really wanted that apple . The more he 51 like this , the more unhappy he became.
52  ,the boy of our story was a pretty smart guy, even if he couldn’t always get what get he wanted .He started to say to himself . This isn’t    53    ,I   don’t have the apple and I’m feeling miserable as well.There’s 54   more I can do to get the apple-that is unchangeable-but we are supposed to be able to 55 our feelings. If that’s the case, what can I do to feel better?

小题2:A. so B. then C. but D or

小题8:A hope B. hand C. sight D. reach

判断题

健身跑可以提高人的耐久力，能使人长时间坚持工作而不宜疲劳。