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问题 单项选择题

测试现场直放站的实际上下行增益（输出信号功率-输入信号功率），并与直放站标注的增益值比较是否一致，误差范围在（）内。

A.3%

B.5%

C.10%

D.20%

答案

参考答案：C

单项选择题 B1型题

方中含有竹叶的是（）

A.茵陈蒿汤

B.黄连解毒汤

C.普济消毒饮

D.小蓟饮子

E.龙胆泻肝汤
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单项选择题

Over the last century, paleontologists have used small differences between fossil specimens to classify Triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time.
Which of the following, if true, would enable the conclusion of the argument to be properly drawn

A．Not every species that lived in a given area is preserved as a fossil.

B．At least one individual of every true species of Triceratops has been discovered as a fossil specimen.

C．No geographical area ever supports more than three similar species at the same time.

D．In many species, individuals display quite marked variation.

E．(E) Differences between fossil specimens of Triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.
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