商品流通企业管理信息系统中的( )子系统的主要任务是将制造业、批发业、零售业相关的商业信息，通过计算机网络互相交换，它可以将业界或地区闭锁性的系统发展成一个开放式的资源共享系统。
A．销售点实时管理系统(POS)
B．电子数据交换(EDI)
C．电子定货(EOS)
D．网络加值(VAN)
参考答案：D
解析： 商品流通企业管理信息系统中的网络加值子系统的主要任务是将制造业、批发业、零售业相关的商业信息，通过计算机网络互相交换，它可以将业界或地区闭锁性的系统发展成一个开放式的资源共享系统。
| Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap. For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users. Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century. there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States. A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crashing the tablets in milk or orange juice. |
The second paragraph points out that ______.
A．aspirin is always safe
B．aspirin can be dangerous
C．aspirin has been long used
D．aspirin is not truly effective