问题 单项选择题

某工程包括7个作业/(A~G),各作业所需的时间和人数及互相衔接的关系如图所示(其中虚线表示不消耗资源的虚作业)。

如果各个作业都按最早可能的时间开始,那么,正确描述该工程每一天所需人数的图为()

A.选项A

B.选项B

C.选项C

D.选项D

答案

参考答案:D

解析:

该工程的关键路径是A—B—E—G(所需天数最多的路径),所以该工程共需70天。画水平的时间坐标轴,标记10,20,…,70天。

将关键路径上的作业按时间进度标记在坐标轴下面第1行内,同时标出各作业所需的人数。

由于要求各作业尽早开始,因此作业D(需4人)与作业C(需2人)都应在第21天到40天进行,将作业D与C及其所需人数填入表4-6中。

作业F(需2人)应紧随作业C进行,所以应安排在第41天~50天进行,将其填入表中。

所有的作业填完后,现在可以将逐段时间合计所需的人数填入末行。

某工程计划分析表

0
阅读理解

阅读短文,根据其内容简要回答问题。

        About 1,000 students and teachers from six universities (大学) across Beijing have been given the

chance to see the world famous New York Philharmonic perform (演出) on its first visit to the city in

156 years.

        In early June, students from Beijing University, China Institute (学院) of Music and other four

universities were invited by Citibank (花旗银行) to take part in an educational test to win tickets-given

by the US banking company - to see one of the world's oldest and greatest orchestras (管弦乐队).

       The first 1,000 students who had correct answers to the five test questions won an entrance ticket

to the Beijing performance.

       "Citibank has a strong heritage (传统) in the educational course," said William, the bank's Beijing

manager. "We have made these tickets able to be used as part of our support (支持) of the New York

Philharmonic's tour to Beijing, so that students may have the chance to experience the music of this most

important and successful orchestra." The New York Philharmonic is going to give two performances in

Beijing on June 23 at the 21st Century Theatre and on June 24 at the Great Hall of the People.

Questions:

1. Is New York philharmonic well-known on the earth? 

    ______________________________________.

2. For the first 1,000 students who passed the test, what could they get?

    ______________________________________. 

3. How can the students pass the test?

    ______________________________________.

4. How many performances will New York Philharmonic give in Beijing?

    ______________________________________.

5. How long has New York Philharmonic been founded?

    ______________________________________.