有限的药物资源只有用于效益/成本比值大的方案才能实现最优配置和最佳利用。

秀水街又成为________。

"What does the middleman do but add to the price of goods in the shops " Such remarks are aimed at the intermediate operations between manufacturers and final customers. This practice usually attracts a lot of attention from the public and the press and the operation most talked about is what is often called wholesaling.
The wholesaler buys goods in large quantities from the manufacturers and sells them in smaller parcels to retailers, and for this service his selling price to the retailer is raised several percent higher. But his job is made more difficult by retail demand not necessarily running level with manufacturers’ production. Because he adjusts or regulates the flow of goods by holding stock Until required, he frees the manufacturer, to some extent, from the effect on production of changing demand and having to bear the whole risk.
The manufacturer can then keep up a steady production flow, and the retailer has no need to hold heavy stocks, who can call on the wholesaler for supplies any time. This wholesale function is like that of a valve in a water pipe. The middleman also bears part of the risk that would otherwise fall on the manufacturer and also the retailer.
The wholesaler provides a purely commercial service, for which he is too well rewarded. But the point that is missed by many people is that the wholesaler is not just someone adding to the cost of goods. It is true one could eliminate the wholesaler but one would still be left with his function: that of making sure that goods find their way to the people who want them.

The author quite possibly believes that the function of the wholesaler is ______.

A．good but too costly

B．necessary but harmful

C．removable but necessary

D．acceptable but unnecessary

“海基会”与“海协会”会谈达成“九二共识”之后，海协会会长汪道涵先生立即宴请海基会会长辜振甫先生，并亲自设计了菜单的菜名：情同手足、龙族一脉、琵琶琴瑟、喜庆团圆、万寿无疆、三元及第、燕语华堂、兄弟之谊、前程似锦。这不能反映(　　)

A．两岸均坚持一个中国的原则

B．两岸官方交流日益扩大

C．双方求同存异，争取互利双赢

D．两岸同胞血脉相连

病毒是结构比较简单的生物，下列说法中正确的是（）。

A.病毒是生命系统中最基本的结构层次

B.病毒的遗传物质是RNA

C.病毒的元素组成与染色体可能相同

D.病毒具有与细菌一样的细胞结构

根据印花税法律制度规定，应缴纳印花税的凭证是（）

A.向福利院捐赠财产协议

B.房屋产权证副本

C.企业法人营业执照

D.劳动合同书