异常肺泡呼吸音包括()
A.肺泡呼吸音减弱或消失
B.断续性呼吸音
C.呼气音延长
D.肺泡呼吸音增强
E.粗糙性呼吸音
参考答案:A, B, C, D, E
— Can I have two bottles of beer please?
— _______ . That'll be$20, please. [ ]
A. Come on.
B. With pleasure.
C. Don't mention it.
D. There you are.
有下列二叉树,对此二叉树中序遍历的结果为( )。
A.ABCDEF
B.BDAECF
C.ABDCEF
D.ABCDFE