遥感图像的常用分析方法有()
A.主导因素分析法
B.相关分析法
C.系列制图法
D.分区分类法和环境本底法
参考答案:A, B, C, D
Although the country has had political independence for over a century, it needs the support of its neighbors.
A.naturally
B.economically
C.especially
D.luckily
洛阳亲友如相问,()。(唐·王昌龄《芙蓉楼送辛渐》)