某公路桥台基础,基底尺寸为4.3m×9.3m,荷载作用情况如习图3.3.20所示。已

题型:单项选择题 案例分析题

问题:

某公路桥台基础,基底尺寸为4.3m×9.3m,荷载作用情况如习图3.3.20所示。已知基础土修正后的容许承载力为270kPa。按照《公路桥涵地基与基础设计规范》(JTGD63-2007)验算基础底面土的承载为时,得到的正确结果应该是()论述。()

A.基础底面平均压力小于地基容许承载力;基础底面最大压力大于地基容许承载力

B.基础底面平均压力小于地基容许承载力;基础底面最大压力小于地基容许承载力

C.基础底面平均压力大于地基容许承载力;基础底面最大压力大于地基容许承载力

D.基础底面平均压力大于地基容许承载力;基础底面最大压力小于地基容许承载力

考点:岩土工程专业案例浅基础浅基础题库
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植物细胞中可以将太阳能转换为化学能的结构是

A.细胞质

B.线粒体

C.叶绿体

D.细胞核

题型:单项选择题 案例分析题

下列关于混凝土缓凝剂的叙述中,哪一项是正确的()?

A.掺了早强剂的混凝土不可掺缓凝剂,因为二者作用相抵

B.掺缓凝剂的混凝土28d强度会偏低,但不影响其长期强度

C.缓凝剂可延缓水化热释放速度,可用于大体积混凝土施工

D.羟基羧酸盐缓凝剂会改善混凝土的泌水性

题型:单项选择题 案例分析题

The best way of learning a language is using it. The best way of learning English is talking in English as much as possible. Sometimes you’ll get your words mixed up(混合)and people will not understand you. Sometimes people will say things too quickly and you can’t understand them. But if you keep your sense of humor(幽默感),you can always have a good laugh at the mistakes you make. Don’t be unhappy if people seem to be laughing at your mistakes. It’s better for people to laugh at your mistakes than to be angry with you, because they don’t understand what you are saying.The most important thing for learning English is:“Don’t be afraid of making mistakes because everyone makes mistakes.”

小题1:What should you do in learning English?

A.Be careful not to make any mistake.

B.Write as quickly as you can.

C.Speak English as much as you can.

D.Laugh all the way.小题2:When people laugh at your mistakes, you should______.

A.not care 

B.be happy

C.feel worried

D.be unhappy小题3:When you make a mistake, you should______.

A.keep quiet

B.get angry

C.be kind

D.keep your sense of humor小题4: The story tells us: “________”

A.Only foolish people make mistakes

B.Few people make mistakes

C.People never make mistakes  

D.There is no one who doesn’t make mistakes

题型:单项选择题 案例分析题

男性,60岁。因慢性阻塞性肺病呼吸衰竭接受机械通气治疗,并发右下肺炎,病原学检查确认为铜绿假单胞菌。其抗菌治疗选择下列哪一组方案较合理()

A.头孢曲松联合阿米卡星

B.头孢曲松联合喹诺酮类

C.头孢噻肟联合哌拉西林

D.头孢噻肟联合庆大霉素

E.头孢他啶联合氨基糖苷类

题型:单项选择题 案例分析题

孤雌生殖

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