问题
单项选择题
关于创伤性血胸，叙述错误的是（）
A.可与气胸同时存在
B.胸腔积液涂片找到细菌，可确定已有感染
C.穿刺血液很快凝固，提示出血可能停止
D.凝固性血胸应待病情稳定后尽快手术
E.感染时白细胞计数明显增加，比例达100∶1
答案
参考答案：C
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关于创伤性血胸，叙述错误的是（）
A.可与气胸同时存在
B.胸腔积液涂片找到细菌，可确定已有感染
C.穿刺血液很快凝固，提示出血可能停止
D.凝固性血胸应待病情稳定后尽快手术
E.感染时白细胞计数明显增加，比例达100∶1
参考答案：C
Leonardo may have been the greatest genius(天才) have ever known. He lived in Italy around the year 1500,but many of his inventions seem modern to us today. For example, one of his notebooks has drawings of a helicopter. Of course, he couldn’t a helicopter with the things he had. But scientists say his idea would have worked. But Leonardot an inventor. He was one of the greatest artists of his day. By the time he was twenty years old, he was called a master(大师）painter, and as he got older he became more famous. Sometimes he drew a hand ten different way she was ready to paint. Many of Leonardo’s wonderful paintings are still with today. You may know one of his most famous works the woman known as the Mona Lisa.
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