五行中，土的特性是（） A.曲直 B.炎上 C.润下 D.从革 E.稼穑

"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.

A middleman’s work may become difficult because ______.

A．manufacturers run their production on a much higher level

B．market demand may not be the same as industrial production

C．retailers are not necessary in running their retailing business

D．retailers demand lower levels than those demanded by manufacturers

相对于现有杀毒软件在终端系统中提供保护不同，（）在内外边界处提供更加主动和积极的病毒保护。

A、防火墙

B、病毒网关

C、IPS

D、IDS

下列病变均可导致嗜酸性粒细胞增多症，哪种病症不伴特异性肺浸润（）

A.吕弗勒综合征

B.微丝蚴病

C.结节性多动脉炎

D.支气管肺曲菌病

E.肺泡蛋白沉积症

镀锌钢管螺纹法兰连接衬垫，冷水管道一般采用1.5～3.0mm厚的橡胶垫，衬垫不得凸入管内，其外边缘接近螺栓孔为宜，并不得安放双垫或偏垫。( )

《死神》作者是谁（）