某工程双代号时标网络计划如下图所示，该计划表明（）。 A.工作

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问题多项选择题

某工程双代号时标网络计划如下图所示，该计划表明（）。

A.工作c的自由时差为2天

B.工作E的最早开始时间为第4天

C.工作D为关键工作

D.工作H的总时差为零

E.工作B的最近完成时间为第1天

答案

参考答案：A, C, E

填空题

用所给单词的适当形式填空。

1. You are too tired. Why not ______ (lie) down and listen to some music?

2. You'd better take part in some ______ (organize) activities.

3. He likes to eat potatoes and ______ (tomato).

4. As we know, the l6th ______ (Asia) Games will be held in Guangzhou in 2010.

5. Now I'd like to know your ______ (predict) about the future.

6. My parents don't allow me ______ (come) home late at night.

7. I think Tom should tell his friend Jack not ______ (be) late for class again.

8. The kids need time and ______ (free) to play.

9. You aren't ______ (allow) to take the book out of the library.

10. The comedy made us ______ (laugh)

判断题

柜台自营买卖比较分散，交易品种较单一，一般仅为非上市的债券，通常交易量较小。( )