感染性心内膜炎，行人工瓣膜置换的指征是（） A.脾肿大伴左上腹

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问题单项选择题

感染性心内膜炎，行人工瓣膜置换的指征是（）

A.脾肿大伴左上腹疼痛并闻及摩擦音

B.中度贫血有杆状指

C.高热持续不退，白细胞持续升高

D.皮下出血点增多

E.瓣膜穿孔

答案

参考答案：E

选择题

Miss Jones music at Bardon School for five years when she was abroad and now she has been appointed _______ of our school．

A．had taught; president

B．has taught; the president

C．taught; president

D．has been teaching; the president

判断题

非正式沟通的优点是传递速度快；缺点是难于控制，信息容易失真。