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问题 单项选择题

临床试验的效果评价指标不包括

A．有效率

B．治愈率

C．生存率

D．保护率

E．好转率

答案

参考答案：D

解析：临床试验主要是评价某种药物或治疗方法的效果，常用指标有有效率。治愈率、病死率、不良事件发生率、生存率等。所以答案选D。

问答题 简答题

复层鳞状上皮从底层到表层细胞形态的变化规律是什么?
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单项选择题

WLANs are increasingly popular because they enable cost-effective connections among people and applications that were not possible in the past. For example, WLAN-based applications can enable fine-grained management of supply (11) to improve their efficiency and reduce (12) . WLANs can also enable entirely new business processes. To cite but one example, hospitals are using WLAN-enabled point-of-care (13) to reduce errors and improve overall patient care. WLAN management solutions provide a variety of other benefits that can be substantial but difficult to measure. For example, they can protect corporate data by preventing (14) through rogue access points.They can improve overall network management by integrating with customers’ existing systems. Fortunately, it isn’t necessary to measure these benefits to justify investing in WLAN management solutions, which can quickly pay for themselves simply by minimizing time- (15) deployment and administrative chores.

（12）是（）

A.overhead

B.connection

C.supply

D.effect
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