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问题 多项选择题

标准液的正确使用方法是（）

A.应采购有卫生部生产文号的商品标准液

B.一瓶标准液只能使用一次，避免反复冻融、反复使用

C.定值质控血清只能用于临床生化室内质量控制及室间质量评价

D.定值质控血清可用作常规分析的标准物质

E.按照各种标准液不同保存条件妥善保管，并在其有效期内使用

答案

参考答案：A, B, C, E

选择题

下列说法正确的是[ ]

A. 任何有理数的绝对值都是正数。

B. 两数相加就是把它们的绝对值相加。

C. 0的相反数、绝对值、倒数都是它本身。

D. 除以这个数等于乘以这个数的倒数。

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单项选择题 案例分析题

Logistics System A logistics system consists of different functions and activities,such as the following: 1.Customer service is a core function in the logistics process.Each business entity should have a customer service department to handle complaints,special orders,loss and damage claims,returns,bills problem,and etc．This function becomes crucial because any dissatisfaction can lead to failure to retain customers. 2.Inventory management is to maintain the stock of raw materials and half-finished products.In order to satisfy the customers＇demand and minimize costs,a company should establish an optimal level of inventory to meet the market demand that exceeds our expecta-tions,and at the same time,minimize your inventory holding costs and inventory write-down costs. 3.Transportation has taken a great role in many logistics systems for two reasons.First of all,globalization and importing-exporting activities make most products necessary to be transferred from one country to another.Secondly,information revolution has propelled the manufacturing process and consumer behaviors to be changed drastically.Traditional trans-portation methods need to be upgraded to accommodate modern transportation demand,therefore,containerization and usage of information sharing system emerge. 4.Storage is needed to manage the materials and store ready-for-market products in warehouses.There is new technology applied in the storage,for example,automatic ware-house.Old-fashioned warehouse has become the distribution center where container trucks deliver and pick up the goods. 5.Information system links all logistics processes and integrates all information to en-sure all the handling of large quantity of goods are delivered in an efficient,cost-effective and accurate manner. Questions:

Which of the following function does a logistics system include？（）

A.Whole sales.

B.Cash management.

C.Storage.

D.Internet.
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