麦克塞对营销因素是怎样分类的？
参考答案：
（1）产品
（2）价格
（3）销售渠道
（4）销售促进
She may have been caught in the heavy traffic, ____ she won’t arrive here by five o’clock.
A．in case
B．in case of
C．in that case
D．in which case
物流系统的特征有
