一空间直线的H面投影反映实长，则该直线可能是（） Ⅰ．水平线； Ⅱ．侧垂线； Ⅲ．正

阅读理解。

     Barack Obama, a black man,is the president of the United States now. He was born on August 4th, 1961,

in Haiwaii (夏威夷) and has lived in many places. His mother was from Kansas (堪萨斯州) and his father was

from Kenya (肯尼亚). Obama went to Columbia University in New York and got a law degree at Harvard

University in Massachusetts. His wife is Miccelle Obama. She also worked as a lawyer (律师) and later worked

for the University of Chiscago. They have two young daughters.

     Obama wrote a book called Dreams from my father."I always live in the dream of my father and American

people,"Obama once said. He was born in a poor family, And he was taken good care of by his grandparents

when he was young. He also lived and worked in Africa. Then he got good education in Harvard University.

On November 4th, 2008, he became the new president of American for the next four years. Obama was very

surprised when he won the Nobel Peace Prize on October 9th, 2009.

1. Where was Barack Obama born?

A. In Hawaii.

B. In Kansas.

C. In Massachusetts.

D. In New York.

2. ________ Universities are mentioned (提及) in the passage.

A. Three

B. Four

C. Five

D. Six

3. Which of the following is NOT true?

A. Obama's father was from Kenya.

B. Obama has a son and a daughter.

C. Obama once worked in Africa.

D. Obama won the Nobel Peace Prize on October 9th, 2009.

4. Barack Obama became President at the age of ________.

A. 27

B. 37

C. 47

D. 57

在使用显微镜观察写有“6”的玻片时，许多同学都说看到的是“9”，而小明看到的是“”，为了和大 * * 持一致，他也说看到了“9”，他们都认真观察了吗？物像到底是什么？你认为在科学实验中，应该如何做？

X.25协议在（）和（）层需要差错检测。

周游与杨财、王昭、陆维三人合伙开办了一个合伙企业。由周游、杨财、王昭各出资5万元，陆维提供技术入伙，与周游、杨财、王昭平均分配盈余。四人办理了有关手续并租赁了房屋，但并未订立书面协议。半年后，杨财想把自己的一部分财产份额转让给丁雨，周游和王昭同意，但陆维不同意，并表示愿意受让杨财转让的那部分财产份额。因多数合伙人同意丁雨成为新的合伙人，陆维于是提出退伙，周游、杨财、王昭同意。此时，企业已对银行负债8万元。此后，企业经营状况持续恶化，半年后散伙，又负债6万元。根据案情回答下列问题：

陆维是否可以退伙为什么

建设项目实施建设监理程序是什么？