在100克含糖10%的糖水中加入10克糖和10克水，结果糖水的含糖是[ ] A、

具有软坚泻下，清热泻火作用的药物是（）

A.硭硝

B.郁李仁

C.食用油

D.火麻仁

E.蜂蜜

《资治通鉴》记载:西汉初期,匈奴“往往入盗于汉边,不可胜数;然尚贪乐关市(边境贸易)，嗜汉财务,汉亦关市不绝,以中其意”。对上述现象理解不正确的是

A．战争没有阻断各民族间的经济交流

B．匈奴接受了汉族先进的生产方式

C．经济交流符合汉族和少数民族人民的心愿

D．匈奴对汉朝的物产有较大的需求

"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 middleman relieves the producer of ______.

A．fluctuating market demand and staying at risk

B．the production of commodities for the retail market

C．some extent of production of changing demand

D．storing goods in a warehouse until they are needed

( )是一种自航式、自带泥舱、一边航行一边挖泥的吸扬式挖泥船。

A．绞吸式挖泥船

B．耙吸式挖泥船

C．链斗式挖泥船

D．抓扬式挖泥船

苯乙烯分子中由于有（），其化学性质较为活泼。

A.苯环

B.氢元素

C.碳碳双键

D.碳碳三键