( )定心性能好，装拆方便。A．平键 B．楔键 C．切向键 D．花键

Passage 1In order to produce goods and services, businesses need to buy the required raw materials and equipment. Many firms need to order components or equipment to their own specifications which will later be used to produce a finished product. Firms need reliable suppliers who must be:Stable. Firms that can not supply goods in time to the purchasing company may mean delays and holdups for customers. Thus the purchasing company should check the financial background of its suppliers.Able. The purchasing company must investigate whether potential suppliers are able to make the goods required. This may mean looking at the firm’s equipment and staff expertise if a large or important order is being considered. Some purchasing departments may ask for evidence of the firm having done similar work for other organizations before placing an order. Trade directories and specialist magazines are a useful starting point in this research.Clear. What is required will usually be made clear in a specification. The specification or “spec” will give the exact technical details of what is needed in terms of size, shape, color and performance of the items to be purchased. The supplying firm must then meet this specification exactly.An important problem all purchasing companies have to deal with is whether to use one or two or several suppliers. By using several suppliers it is argued that competition between them will force prices down. And delays or disruption at one supplier will not affect too much. Arguments against this are that researching various suppliers is time-consuming and expensive, and low prices might mean reduced quality. Using fewer suppliers for larger orders can mean that the purchaser receives greater attention and discount for bulk purchases. The suppliers will be more involved in the firm’s business, too.

A “clear” supplying firm must initially give the purchaser its specifications clearly and in exact technical detail. ( )

链球菌分类的根据是（）。

A.在血液琼脂培养基中溶血的情况

B.产生色素的颜色

C.细菌的致病作用

D.鞭毛抗原的特异性

E.对营养的要求

阅读下列材料

材料一：中华人民共和国外交政策和原则是，为保障本国独立、自由和领土主权的完整，拥护国际的持久和平和各国人民的友好合作，反对帝国主义的侵略政策和战争政策。     

——《共同纲领》                                                                                                                                                         

材料二：最近中国和印度曾经达成一项协议。在这一协议中，它们规定了指导两国之间关系的某些原则，这些原则是：甲、互相尊重领土主权；乙、互不侵犯；丙、互不干涉内政；丁、平等互利；戊、和平共处。两国 * * 重申这些原则，并且感到在他们与亚洲以及世界其他国家的关系中也应该适用这些原则。如果这些原则不仅适用于各国之间，而且适用于一般国际关系之中，它们将形成和平和安全的坚固基础。

——《中印两国 * * 联合声明》（1954年6月28日）

材料三：新中国成立６０年来，多边外交走过了一条不平凡的道路。从５０年代出席万隆会议和日内瓦会议，初步亮相国际舞台，艰难打开局面；到１９７１年恢复在联合国合法席位，实现历史性转折；……改革开放３０年以来，……中国积极、建设性参与了朝核、伊朗核、缅甸、伊拉克、阿富汗、苏丹达尔富尔等国际热点问题的解决进程，为共同应对新威胁、新挑战作出重要贡献。……中国在各种多边平台坚持原则，积极参与国际规则的谈判与制定，努力维护中国在政治、安全、经贸、 * * 、卫生、环境等各个领域的切身利益。……我们积极推动东亚系列峰会、亚太经合组织、亚欧会议、上海合作组织等区域合作机制开展务实合作                               

—— 张业遂（中国常驻联合国代表）

请回答：

（1）根据材料一，说明建国初期外交方针。（2分）

（2）根据材料二，“某些原则”可以概括为什么原则？结合材料及所学知识分析其意义。（6分）

（3）结合材料三，概括新中国外交的成就。（4分）

人民代表大会制度作为我国的根本政治制度，直接体现了宪法一般原则中的( )。

A．权力制约原则
B．法治原则
C．基本 * * 原则
D．人民主权原则

采购入库单可由采购发票或采购订单完成。( )