物业综合管理具有物业管理委托性和（）的基本特征。
参考答案：有偿性
—Can you tell me _________?
—I lost my MP3 player.
A．What’s the matter with you
B．what the matter is with you
C．what the matter you is
D．what the matter with you are.
进口设备关税的计算公式为：进口关税＝（）×人民币外汇牌价×进口关税率。
A．离岸价
B．到岸价
C．离岸价+国外运费
D．离岸价+国外运输保险费
