下列不属于网络营销策划的基本原则是（）。
A.娱乐性原则
B.客户导向原则
C.系统性原则
D.操作性原则
参考答案：A
I’ll pay a visit to the Inner Mongolia , there is a large temperature difference between day and night.
A．in which
B．for which
C．from which
D．of which
立式钻床的最大钻孔直径有（）几种规格。
A.25mm
B.35mm
C.40mm
D.50mm
