组织设计的核心是( )
A．结构设计
B．职位设计
C．功能设计
D．目标设计
参考答案：A
—What happened __________ you, Mary? You looked so sad.
—I couldn't find my MP3. It's a present from my mother. [ ]
A. with
B. on
C. for
D. to
游离性胸膜腔积液在胸部摄片上就可见到，一般体积应为（）。
A.10ml
B.30ml
C.100ml
D.200ml
E.300ml
