影响饱和砂土及粉土液化的因素很多,除规范中列出的地质年代,土中黏粒含量,上覆非液化土

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问题:

影响饱和砂土及粉土液化的因素很多,除规范中列出的地质年代,土中黏粒含量,上覆非液化土层厚度和地下水位深度外,下述说法中正确的是()。

A.砂土的密实程度是影响土层液化的重要因素,如Dr<50%的砂土普遍发生液化,而

B.土层的埋深越大,侧压力越大,土层越易发生液化

C.地震烈度越高,地面运动强度就越大,土层越容易发生液化,一般在6度烈度及其以下地区可不考虑液化问题

D.震动作用的持续时间越长,越容易液化,因此某场地在遭受到相同烈度的远震比近震更容易液化,因为前者对应的大震持续时间比后者对应的中等地震持续时间要长

考点:岩土工程专业知识第七章地震工程第七章地震工程题库
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随着城市化、工业化的发展,致病因素显著变化,下列哪些逐渐上升为主要致病因素()

A.生物因素

B.心理因素

C.生活方式

D.环境因素

E.医疗保健服务

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《黄帝内经》后世分为

A.《灵枢》

B.《素问》

C.《难经》

D.《金匮要略》

E.《本经》

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Blair Admits Never Having Sent Flowers to His Wife


British Prime Minister Tony Blair admitted on a television programme that he has never sent flowers to his wife Cherie and that he had a youthful crush on Hollywood beauty Grace Kelly.
Blair, who allowed Channel 4 interviewer June Sarpong to shadow him for two days last month, made other personal (1) when asked questions he rarely hears on the usual television political (2) .
During the interviews for a program targeting 18-30 year (3) , the prime minister admitted he sometimes has to "wing it" when (4) public appearances and that he yearns to go out for a drink (5) being recognised.
However, the most dramatic revelation was his reply to Sarpong’s (6) on whether he still sends his wife flowers, prompting his interviewer to (7) in disbelief. "I’ve never sent her flowers. If I sent her flowers, she would (8) worried," Blair said.
But he added: "I am romantic. There are other ways of (9) romantic."
Blair needed a few moments to recall which posters he had (10) his bedroom wall as a youngster, then revealed: "I’ll tell you... actually, (11) I was younger, I loved Grace Kelly."
Born in 1929, Kelly (12) in films like ’Dial M For Murder’, ’Rear Window’ and ’High Society’ in the mid-1950s, but (13) acting to marry Prince Rainier of Monaco in 1956, when Blair was (14) two years old.
Blair admitted he initially found it "odd" to be (15) minister and to be rushed in motorcades from appointment to (16) , and worried that his lifesty left him "a bit isolated" from (17) people.
He admitted that he was constantly on the phone between public (18) , and rarely had time to prepare for his next (19) , telling Sarpong: "I wing it all the time."
And he revealed he has to check himself before he replies to (20) questions from the public. "The worst thing is when someone is giving you a real earful and you think ’I’m going to say something I will regret’," he said.
Asked what he would do if he could be invisible for a day, Blair yearned for a more ordinary life, saying he would "just walk down the street and go to the pub... just be absolutely normal".

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结构较简单,体积较小,流量大,压头不高,可输送腐蚀性、悬浮液的泵为()。

A、往复泵

B、离心泵

C、旋转泵

D、真空泵

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你能举出几个属于大尺度、天气尺度及中小尺度的天气系统吗?

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