问题 选择题
一个大园的直径正好是小圆直径的2倍,那么小圆的面积是大圆面积的(  )
A.
1
2
B.
1
4
C.
1
6
D.
1
8
答案

根据圆面积公式,得两圆的面积比是两圆的半径平方比,也是两圆的直径平方比,即12:22=

1
4

故选:B.

问答题 简答题
单项选择题 案例分析题

What is logistics? In the current business environment,logistics is generally accepted as a very important element for the economic development and business growth of a region,especially a port city. In reality,what does logistics mean?In which way does it operate? For simple definition,logistics is a set of procedures in which commodity is delivered in an efficient manner from suppliers to customers.There are three key aspects to the concepts: 1.Movement of goods Goods can be considered as valuable objects,such as cargo and materials that are valua-ble and purchasable through commercial transactions and processes.Flow can be determined as methods in which goods are moved or transferred between locations,intermediaries and merchandisers.Modes of transportation include motor,rail,water,air and pipeline. 2.Direction of the flow of goods In the open market place,buyers and sellers represent two ends of a commercialtrans-action.Buyers are usually customers who demand the goods,while,as sellers are suppliers who provide such goods.When a transaction is agreed upon (sometimes payment is comple-ted,other times the payment is arranged to be completed at a later stage),the suppliers have the responsibility to arrange for the goods to be delivered to the customers. 3.Efficient management of the flow process The transportation of goods should bear low cost and ensure safety and punctuality.It should do its best to avoid wasting customers'resources.Currently,the flow of goods is generally controlled by both hardware and software.By hardware,we mean logistics facili-ties and equipment,such as ports,warehouses and trucks,ships,railroad,cars and air-lines.By software,we mean information system,standardization and data sharing.Questions:

What is logistics?()

A.It is a set of procedures in which goods are delivered from suppliers to customers in the manner of cost efficient and well service.

B.It is a part of a process to deliver goods and services from one place to another.

C.It is a process to transport and store goods.

D.It is the information system for goods movement.