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问题 单项选择题 A1/A2型题

患者，男性，71岁，气促，神志恍惚，面色潮红。球结膜充血、水肿，心率120次/分，心律不齐；肝肋下2cm，双下肢水肿；尿蛋白（+）。为明确病情，首选的检查是（）。

A.脑电图

B.心电图

C.血尿素氮

D.动脉血气分析

E.脑CT

答案

参考答案：D

解析：气促、神志恍惚、面色潮红，提示慢性呼吸衰竭伴CO潴留。血气分析是肺换气功能的监测指标。

选择题

如图是气管树，连最细小的气管都保持敞开的原因是

[ ]

A．有“C”型的软骨支架

B．肌肉较松驰

C．气管壁较硬

D．周围有肌肉牵拉
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单项选择题

Rapid application development (RAD) systems purport to lighten the developer’s (46) by making it easy to program an application with simple intuitive steps.
RAD tools (47) the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to (48) changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application’s real usefulness (49) , the developer armed with RAD tools should be able to (50) on new features with little fuss.

A. appearances B. emergesC. recognizes D. solves
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