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问题 单项选择题

以下哪一条属《温病条辨》提出的“斑疹治禁”（）

A.升提

B.凉血

C.清热

D.和解

E.淡渗

答案

参考答案：A

单项选择题

变频空调器可在供电电压为_____V之间正常工作。

A．110~220

B．160~250

C．110~250

D．90~270
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单项选择题

An engineer designed a ball so that when it was dropped, it rose with each bounce exactly one-half as high as it had fallen. The engineer dropped the ball from a 16-meter platform and caught it after it had traveled 46.5 meters. How many times did the ball bounce ？（）

A. 5

B. 6

C. 7

D. 8

E. 9
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