引起呼气性呼吸困难最常见的病因是A．大片肺组织实变B．大量胸腔

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问题单项选择题

引起呼气性呼吸困难最常见的病因是

A．大片肺组织实变
B．大量胸腔积液
C．大支气管肿瘤
D．气管异物
E．小支气管痉挛

答案

参考答案：E

单项选择题

In doing Chinese-English translation, the translator may run into more difficulties than English-Chinese translation.

A．than in English-Chinese translation

B．than in doing English-Chinese translation

C．than doing English-Chinese translation

D．than to do English-Chinese translation

填空题

1976年，P．P．S．Chen提出的【1】法，是最常用的概念模型表示方法。