A.復(fù)雜型購買 B.習(xí)慣型購買 C.多變型購買 D.經(jīng)濟(jì)型購買
A.人口環(huán)境 B.經(jīng)濟(jì)環(huán)境 C.公眾環(huán)境 D.科技環(huán)境