迈克尔波特指出企业获得竞争优势的三种途径是( )。
A．成本领先
B．卓越管理
C．目标集聚
D．客户服务
E．标新立异
参考答案：A,C,E
There ______ a dolphin show in the zoo tomorrow evening. [ ]
A. was
B. is going to have
C. will have
D. is going to be
路面的回弹弯沉越小，表示路基路面的整体承载能力越大。( )
