下列哪几项是植物性气管、支气管异物可能的X线检查所见（）。 A

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问题多项选择题

下列哪几项是植物性气管、支气管异物可能的X线检查所见（）。

A.肺不张

B.肺气肿

C.肺部炎性表现

D.可见异物阴影

E.无明显异常

答案

参考答案：A, B, C, E

选择题

This year this factory has produced ________ cars as it did last year.

A．as more than three times many

B．more than three times many as

C．more than three times as many

D．three times as more than many

填空题

目前较通用的区划等级系统是（）。