事件营销前首先要考虑（）。
A、展望营销结果
B、预测营销过程中的困难
C、营销所需的投入
D、事件的真实性
参考答案：D
A man may usually be known by the books he reads ____ by the friends he keeps.
[ ]
A. rather than
B. as well as
C. in place of
D. as many as
蒸汽喷射器的操作限度是（）。
A.速率比
B.重量比
C.体积比
D.压缩比
