多普勒测向体制的特点主要有（）
A.可以采用小基础天线阵
B.测向灵敏度高
C.准确度高
D.抗干扰性能强
E.极化误差小
参考答案：B, C, E
5S之仓库管理中遵守的原则是分区、（）、分层。
It is illegal for a public official to ask people for gifts or money（）favors to them.
A. in preference to
B. in place of
C. in agreement with
D. in exchange for
