业主公约的效力范围包括( )。
A．全体业主B．物业使用人C．物业的继受人D．以上都包括
参考答案：D
—______?
—Well, we can't arrive late for class. [ ]
A. Can you arrive late at class
B. What are the rules
C. What else do you have to do
D. Did you arrive late at class
横向一体化战略可提高原材料供应在数量、质量和期限上的保证程度，从而有利于控制成本和增加盈利。( )
