Recently, I flew to Las Vegas to attend a

某中学生，15岁。经骨髓穿刺检查诊断为"急性淋巴细胞白血病"，给以常规治疗，症状无缓解。医生告诉家长，此病目前尚无理想的治疗方法，医院正在尝试使用一种疗效不肯定、有一定风险的药物。其家长表示愿意做这种试验性治疗。但没有履行书面承诺手续。治疗二天后，病人病重，抢救无效，死亡。此后，家属否认曾同意这种治疗方案，称是"拿病人做试验"，要追究医生责任，于是造成医疗纠纷。

就本案分析，医生做出选择的伦理依据是（）。

A.研究目的是正确的

B.符合知情同意的原则

C.符合受试者利益的原则

D.治疗期间，医生是积极负责的

E.以上各点都符合临床医学研究原则，没有错误

如图所示，两个相同的炊壶内装有同样多的水，此时都已沸腾．已知炉火的强度和房间内空气的湿度都相同，因此，可以判断出：房间甲的气温 ______（填“高于”、“低于”或“等于”）房间乙的气温．

"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.

What function of the wholesaler is compared to a valve

A．Controlling the flow of goods.

B．Pushing up demand from retailers.

C．Bearing part of the risk for manufacturers.

D．Selling goods to retailers.

脑电图检查对CJD的诊断具有特征性意义，表现为（）

A.周期性发放的高波幅三相或双相尖波，间隔为0.5～2秒

B.阵发性发放的高波幅三相或双相尖波，间隔为1～2秒

C.周期性发放的低波幅三相或双相尖波，间隔为2～5秒

D.阵发性发放的高波幅三相或双相锐慢波，间隔为4～8秒

E.周期性发放的高波幅三相或双相尖波，间隔为1～2秒

下列哪个数代表八进制整数

A) 0XA5
B) 0144
C) 1840
D) -1