【单选题】Which of the following statements is true of clustering as a means to segmenting?
A.
Clustering tries to find contrasting patterns within sets of data.
B.
Clustering groups customers who differ on segmenting dimensions.
C.
Clustering usually requires a computer.
D.
Clustering usually tries to find differences rather than similarities between customers.
E.
Clustering involves combining two or more market segments with heterogeneous needs.
【单选题】细粒棘球绦虫的原头蚴在终宿主体内可发育为 ( )
【单选题】关于离体肺的实验,下列叙述正确的是( )
【单选题】Midori toured the U.S.A.______. [ ] A. when she was fourteen
B.
at the age of fourteen
C.
when she was aged fourteen
【单选题】以下哪个定时器的时基(分辨率)为100ms
【多选题】下列关于糖的过碘酸反应叙述正确的是( )
C.
在中性和弱酸性条件下,反式邻二醇羟基的氧化速度比顺势反式快。