感染性心内膜炎常常累及的瓣膜是
A．二尖瓣
B．肺动脉瓣
C．主动脉瓣
D．三尖瓣
E．下腔静脉瓣
参考答案：C
You should not eat _____ 24 hours.[ ]
A. something in
B. nothing for
C. anything for
D. everything at
治疗方剂选用
A．良附丸B．一贯煎C．黄芪建中汤D．补中益气汤E．二陈汤
