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问题 单项选择题

四肢痿软麻木，身体田重，足胫发热，胸脘痞闷，小便短赤，舌苔黄腻，脉细数者，治疗主方用（）

A．三仁汤

B．白虎加桂枝汤

C．羌活胜湿汤

D．加味二妙散

E．蠲痹汤

答案

参考答案：D

问答题

Ladies and gentlemen,
This is not my first time at a Boao Forum for Asia event. In fact. I was one of the lucky ones to have witnessed the birth of the BFA back in the spring of 2002 in Boao, Hainan Province. I am glad to be back. I am also glad to see that the BFA is going p-engaging governments, business, and civil society in dialogue on issues directly affecting Asia and its peoples.
Back when the BFA was born, another forum also came to life. Many of you may have heard of a forum called the Asia Cooperation Dialogue, or ACD for short. I spoke on this topic at the First BFA Annual Conference. There, I introduced the ACD as a unique ministerial-level forum that brings together, for the first time, all the sub-regions of Asia-from East Asia to South Asia to West Asia-in dialogue and cooperation. At that Conference. I proposed that the ACD and the BFA work closely together because they share the same goals of promoting cooperation and prosperity in Asia.
For this morning, I wish to share with you my thoughts on the prospects for Asia in the world economy. They are not new but they need to be emphasized. Number one: Asia’s dynamism is key to the world’s economic future. Number two: Asia’s diversity is an important strength for the region. Number three: Asia’s collaboration will be solidified if governments and business work together. Number four: Asia’s cooperation will enhance the region’s competitiveness. This is what I would like to call the "Asia Can Do" attitude.
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问答题

某公司需建立产品信息数据库，经调查其业务要求如下：

Ⅰ．一种产品可以使用多个不同种类的部件，也可以使用多个不同种类的零件；一种部件至少被用在一种产品中；一种部件可以由多个不同种类的零件组成；一种零件至少被用在一种产品或一种部件中；

Ⅱ．对于一种具体的部件，要记录这种部件使用的各种零件的数量；

Ⅲ．对于一种具体的产品，要记录这种产品使用的各种部件数量和各种零件数量，但部件所使用的零件数量不计入该种产品的零件数量；

Ⅳ．一个供应商可供应多种零件，但一种零件只能由一个供应商供应。

根据以上业务要求，某建模人员构建了如下ER图：

此ER图中实体的属性完整，但实体、联系的设计存在不合理之处。

②根据重构的ER图给出符合3NF的关系模式，并标出每个关系模式的主码和外码。
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