企业持有现金的成本不包括( )。
A.管理成本B.短缺成本C.沉没成本D.机会成本
参考答案:C
The beautiful dress _______Miss Jones went to the ball was borrowed from a friend of hers. [ ]
A. in which
B. for which
C. that
D. where
主动脉瓣关闭不全的心脏杂音传导特点是()。
A.向左腋下及左肩胛下角处传导
B.向胸骨下端或心尖部传导
C.向上传至右侧胸骨上窝及颈部
D.局限于胸骨左缘第2肋间
E.局限于胸骨左缘第3、4肋间