问题 单项选择题

商品流通企业管理信息系统是由若干个独立单元组成的,这些独立单元称为子系统,各子系统又可以再被划分为若干个下属子系统,如此不断地由上至下逐层分解系统,使每个子系统的分目标服从于系统整体目标。这种特点体现的是系统的()。

A.功能性 

B.层次性 

C.整体性 

D.稳定性

答案

参考答案:B

解析:本题考查系统的层次性。系统的特点:功能性、整体性、层次性、相对稳定性。

填空题
阅读理解

At three a.m., Jack Mills was sitting at the controls of the mail train. The train was made up of 13 cars. At the end of the train, 71 mailmen sat sorting the mail. Inside the second car, there were only five mailmen and 128 bags full of five-pound notes. This train had run more than 100 years without being robbed(抢劫). At three minutes past three, Mills and his helper, David Whitby, saw a yellow warning light. They slowed the train, and then stopped. Whitby went to the telephone beside the track. It was out of order. Then he saw a man moving between the second and the third cars. Before Whitby could give a warning, he was knocked down by two men. Mills’ cars with all the mailmen had been disconnected by the robbers. At the bridge, the bags of money were unloaded from the train and thrown into waiting trucks. One of the robbers who obviously knew the schedules(时刻表) of all the trains kept looking at his watch. At 3:45 he said, “That will have to be enough.” The robbers drove away with more than 2,500,000 pounds.

41. The robbery took place______.

A. before 3:03                                                         B. in the early morning   

C. after three o’clock in the afternoon             D. after 3:45

42. The robbers_____ before the train stopped.

A. were all in the train                                          B. forced Mills to stop the train

C. were waiting for the train to stop                D. ordered Mills to go on driving

43. Why didn’t the other mailmen help the mailmen in the second car when the robbery happened?

A. Because they were busy sorting the mail.

B. Because they didn’t want to help the mailmen in the second car.

C. Because the last eleven cars were separated from the front cars.

D. Because they knew nothing about the robbery.

44. One of the robbers kept looking at his watch because________.

A. he wanted to know the exact time               B. he enjoyed looking at his watch

C. he didn’t know when another train would come

D. they had to leave before another train came

45. Which of the following is NOT true?

A. The train was out of order.         

B. The telephone was put out of order by the robbers

C. Whitby had an assistant driver.          

D. The robbers carried the money away by truck.