计算题:某槽孔孔深为36m,终孔检验时发现其中一个端孔向槽内偏斜,孔斜率20m深处为

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问题:

计算题:某槽孔孔深为36m,终孔检验时发现其中一个端孔向槽内偏斜,孔斜率20m深处为0.4%,孔底为0.3%,问钻凿接头孔时孔位应至少向槽内移动多少距离才能保证设计墙厚?

考点:地连墙工地连墙工高级地连墙工高级题库
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已知x1=-1是方程x2+mx-5=0的一个根,求:
(1)m的值;
(2)方程的另一个根x2
(3)
1
x1
+
1
x2
的值.
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已知a=2010m+2009,b=2010m+2010,c=2010m+2011,则(a-b)2+(b-c)2+(c-a)2=______.

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Jonny Jones was a nice and popular boy, who everyone loved.He was so much fun, so good and so kind to everyone that they treated him wonderfully. But as everything he needed was given to him without asking, Jonny became a weed. He was so spoiled by everyone that he couldn’t stand any hardship.

One day Johnny heard a mother saying to her son “Come on, my boy, get up and stop crying. You are behaving like Johnny Jones.” That made Johnny feel very ashamed. But he was sure that he would prefer to be known as a good boy rather than a fool. Worried, he spoke to his father about all this, though he was afraid that maybe he would be laughed at for having such worries. His father, far from laughing at Johnny, told him that a teacher had taught him a secret trick to turn him into the toughest boy off all. “Eat a candy less, study a minute more, and count to five before crying.” Johnny asked, “Just that? ” “Yes, just that,” said his father, “It’s very simple, but I warn you that it won’t be easy.”

Johnny was happy like a bird, ready to follow the advice. He went to see his mother, and she noticed how happy he was when she offered him candies. “One candy less”, thought Johnny, so he only took one. That afternoon he had another chance to put it into practice by studying one minute more. The result was that he missed the first minute of his favorite program! But having achieved this gave him a great feeling of satisfaction. The same happened when he ran up against the corner of the kitchen table. He only managed to count to four before crying, but that was left deeply in his mother’s memory.

Over the following days Johnny kept using the motto in his life as his father told him. And the more he put this into practice ,the easier it got. Before long he realized that he could also do things that would seem impossible before.

小题1:The underlined word "weed" in the first paragraph refers to ____.

A.a person with a strong v/ill

B.a person with a weak character

C.a person who isn't popular with everyone

D.a person who changes his behavior according to the situation小题2:What made Jonny Jones decide to change himself?

A.A mother's words.              B.Others' attitude to him.

C.His father's advice.           C.His teacher's warning.

小题3:What is the key point of the advice from Jonny's father?

A.Eat fewer candies than before.

B.Count to five before crying.

C.Talk with parents and follow their advice.

D.Learn to control oneself and keep using the motto in life.小题4:What message does the writer want to convey through the story?

A.One should be brave to face his mistakes.

B.Nothing is difficult as long as you set your mind on it.

C.Spoilinga child too much may result in his selfish behaviors.

D.A strong will can be developed by small but consistent efforts.

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主要用于治疗心力衰竭的药是

A.胺碘酮
B.可乐定
C.维拉帕米
D.地高辛
E.氨力农

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液压系统混入()后,会产生爬行和噪声。

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