对于这个病例，最可能诊断是（）。
A.主动脉瓣钙化
B.先天性主动脉瓣畸形（二叶式）
C.风湿性瓣膜病
D.主动脉瓣脱垂
E.主动脉窦瘤
参考答案：B
The doctor told Jack's mother that it would not take him long to __________ from his illness.[ ]
A. suffer
B. separate
C. escape
D. recover
干式煤气柜与湿式煤气柜比较其优点是什么？
