男性，30岁，因左侧胸外伤后出现胸闷、气急来院急诊。体格检查：

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问题单项选择题

男性，30岁，因左侧胸外伤后出现胸闷、气急来院急诊。体格检查：左肺呼吸音低。胸片：左肺压缩50%，左侧肋膈角见宽液平。以下说法错误的是（）

A.患侧胸腔穿刺可抽出不凝血

B.应做胸腔闭式引流

C.应首先给予抗休克治疗，失血多少补充多少

D.如引流量每小时超过200～300ml，应考虑肺撕裂造成进行性血胸，及时行肺叶切除术

E.如没有及时处理.晚期血液可凝固不易吸出

答案

参考答案：D

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单项选择题

有以下程序： char fun(char x,char y) { if(x＜y) return x; return y; } main() { int a='9',b='8',c='7'; printf("%c\n",fun(fun(a,b),fun(b,c)); } 程序的执行结果是( )。

A．函数调用出错

B．8

C．9

D．7