Guitars usually have ebony or rosewood fretboards.The demand for ebony and rosewood varies with the demand for guitars.This is an example of（）.
Guitars usually have ebony or rosewood fretboards.The demand for ebony and rosewood varies with the demand for guitars.This is an example of（）.
A.derived demand
B.consumer demand
C.joint demand
D.elastic demand
正确答案：derived demand；joint demand
Tag：解密市场营销
时间：2023-12-17 20:03:25