问题 单项选择题

In your project, you are using most likely. optimistic and pessimistic activity duration estimates(for activity duration estimating). The technique that you are using is ______ .

A.PERT

B.CPM

C.parametric estimating

D.none of the above

答案

参考答案:A

解析: 在你的项目内, 你使用最可能的、乐观的和悲观的活动历时估算(来估算活动历时)。你使用的技术是 ______ 。 A) PERT B) CPM C) 参数估算 D) 以上都不对 三点估算法:根据概率学知识,对某个估算通过估算最可能、乐观、悲观三个值来完成,属于PERT技术。

阅读理解

阅读短文,从每题所给出的(A、B、C、D)四个选项中选出最佳选项。

     Many people have to work on the weekend. Some people do not mind. Other people think it is terrible.

     One man thinks that working on the weekend can be dangerous. He is Graham Coates. Mr. Coates worked

in an office in Brighton, England.

     On Saturday, May 24, 1986, he went to the office to do some work. When he got in the elevator to go home,

it stopped between floors. Mr. Coates could not get out of the elevator. He was trapped (困住了)! He started to

shout, but no one heard him. Then Mr. Coates remembered that it was a holiday in England. No one was going

to come to work until Tuesday!

     There was nothing for Mr. Coates to do. He had to wait until one his coworkers came to work and found

him. With nothing to eat or drink, Mr. Coates ended up sleeping for most of the time. Early on Tuesday morning,

the vice president of the company came into work and found the elevator was not working. When the elevator

was opened, Mr. Coates came out cold, weak, and tired. He had been in the elevator for sixty-two hours!

     Now Mr. Coates says, "I only uses elevators if they have telephones in them."

1. Mr. Coates could not get out of the elevator because ______. [ ]

A. it was broken

B. it was a weekend

C. it was a holiday

D. it stopped on a wrong floor

2. How long did he stay in the elevator? [ ]

A. Twenty-four hours.

B. From Saturday to Monday.

C. More than sixty hours.

D. From Tuesday to Saturday.

3. What did he do in the elevator most of the time? [ ]

A. Shouted and screamed.

B. Slept and waited.

C. Telephoned his boss.

D. Ate and drank.

4. How did he make his way out in the end? [ ]

A. The vice-president found him.

B. Some one opened the elevator.

C. The elevator began to work on Tuesday.

D. He found a door in the elevator.

5. What is the best title for this story? [ ]

A. An Interesting Elevator

B. A Busy Weekend

C. Elevator Safety

D. Trapped in an Elevator

选择题