纵坡设计应满足哪些要求?

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问题:

纵坡设计应满足哪些要求?

考点:土木建筑工程道路勘测设计道路勘测设计题库
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订立劳动合同必须主体要合法、()的合法。

A.约定条件

B.法定条款

C.条件

D.内容

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对于估算工程量单价合同,下列说法中正确的有( )。

A.要求实际完成的工程量与原估计的工程量不能有实质性的变更

B.适用于工期紧迫、急需开工的项目

C.适用于工程项目内容、经济指标一时不能明确的项目

D.可以避免使发包或承包的任何一方承担过大的风险

E.当实际工程量与清单中所列工程量超过约定的范围,允许对单价进行调整

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将SKF-525A给予实验动物后,发现苯转变为苯酚速率明显减慢,说明该物质抑制()

A.单胺氧化酶

B.双胺氧化酶

C.混合功能氧化酶

D.醛脱氢酶

E.黄嘌呤氧化酶

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阅读理解

     My dad loved pennies, especially those with the elegant stalk(茎) of wheat curving around each side

of the ONE CENT on the back. Those were the pennies he grew up with during the Depression(大萧条). 

     As a kid, I would go for walks with Dad, spying coins along the way-a penny here, a dime(一角硬币) there. Whenever I picked up a penny, he'd ask, "Is it a wheat?" It always thrilled him when we found one

of t  hose special coins produced between 1909 and 1958, the year of my birth.

     One gray Sunday morning in winter, not long after my father's death in 2002, I was walking down Fifth Avenue, feeling bereft. I found myself in front of the church where Dad once worked. I was warmly shown in and led to a seat. Hearing Dad's favorite "A Mighty Fortress Is Our God", I burst into tears. We'd sung

that at his funeral.

     After the service, I shook the pastor's(牧师) hand and stepped onto the sidewalk-and there was a

penny. I bent to pick it up, turned it over, and sure enough, it was a wheat. A 1944, a year my father was

serving on a ship in the South Pacific.

     That_started_it. Suddenly wheat pennies began turning up on the sidewalks of New York everywhere. I got most of the important years: his birth year, my mom's birth year, the year he graduated from college,

the year he met my mom, the year they got married, the year my sister was born. But alas, no 1958 wheat penny-my year, the last year they were made.

     The next Sunday, after the service, I was walking up Fifth Avenue and spotted a penny in the middle

of a crossing. Oh, no, it was a busy street;cabs were speeding by-should I risk it? I just had to get it.

     A wheat! But the penny was worn, and I couldn't read the date. On arriving home, I took out my

glasses and took it to the light. There was my birthday!

     I found 21 wheat pennies on the streets of Manhattan in the year after my father died, and I don't think that's a coincidence.

1. The writer's father loved pennies with wheat because ________.

A. when he first saw it, he began to love it

B. when he saw the wheat, he thought of his time during the Depression

C. when he was young, he had a lot of pennies with wheat

D. when he was a child, he never got a coin with wheat

2. The underlined word "bereft"(in Para.3) means ________.

A. alone  

B. disappointed

C. upset  

D. discouraged

3. Which of the following statements about the author is NOT true?

A. He was born in 1958.

B. He went to church because of his father.

C. He once worked in a church.

D. He knew the church well.

4. The underlined sentence (in Para.5) suggests ________.

A. the author's father began to serve on a ship

B. the author picked up many wheat pennies since then

C. the author began to love wheat pennies since then

D. the author started to look for wheat pennies with 1958

5. The best title for the passage would probably be ________.

A. Pennies from Heaven  

B. My father's life story

C. My father's hobby  

D. Living in New York

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套丝时,螺纹太瘦产生的原因及防止的方法有哪些?

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