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问题 多项选择题

当工程施工的实际进度与计划进度不符时，需要对网络计划作出调整，调整的内容有 ( )。

A．调整关键线路的长度

B．调整非关键工作时差

C．调整组织结构

D．调整资源的投入

E．增减工作项目

答案

参考答案：A,B,D,E

解析： 本题考查的是网络进度计划的调整内容。网络计划调整的内容包括：调整关键线路的长度；调整非关键工作时差：增、减工作项目：调整逻辑关系；重新估计某些工作的持续时间：对资源的投入作相应调整。

单项选择题

8051单片机的P2口可以驱动（）个LSTTL负载。

A.2

B.4

C.8

D.16
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单项选择题

"What does the middleman do but add to the price of goods in the shops " Such remarks are aimed at the intermediate operations between manufacturers and final customers. This practice usually attracts a lot of attention from the public and the press and the operation most talked about is what is often called wholesaling.The wholesaler buys goods in large quantities from the manufacturers and sells them in smaller parcels to retailers, and for this service his selling price to the retailer is raised several percent higher. But his job is made more difficult by retail demand not necessarily running level with manufacturers’’ production. Because he adjusts or regulates the flow of goods by holding stock until required, he frees the manufacturer, to some extent, from the effect on production of changing demand and having to bear the whole risk.The manufacturer can then keep up a steady production flow, and the retailer has no need to hold heavy stocks, who can call on the wholesaler for supplies any time. This wholesale function is like that of a valve in a water pipe. The middleman also bears part of the risk that would otherwise fall on the manufacturer and also the retailer.The wholesaler provides a purely commercial service, for which he is too well rewarded. But the point that is missed by many people is that the wholesaler is not just someone adding to the cost of goods. It is true one could eliminate the wholesaler but one would still be left with his function: that of making sure that goods find their way to the people who want them.

What function of the wholesaler is compared to a valve

A．Controlling the flow of goods.

B．Pushing up demand from retailers.

C．Bearing part of the risk for manufacturers.

D．Selling goods to retailers.
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