判断题
塞麦尔维斯发现了产褥热的原因是细菌感染
塞麦尔维斯发现了产褥热的原因是细菌感染
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单项选择题
The vegetations of infective endocarditis are found most frequently on
The vegetations of infective endocarditis are found most frequently on
A.the aortic valves
B.the mitral valves
C.the tricuspid valves
D.the pulmonary valves