据统计,在我国南方锋面坡度约为_____,在北方锋面坡度约为____。
A.1/100~1/200; 1/100~1/200
B.1/200~1/400; 1/100~1/200
C.1/200~1/400; 1/50~1/200
D.1/200~1/500; 1/50~1/200
正确答案是D
据统计,在我国南方锋面坡度约为_____,在北方锋面坡度约为____。
A.1/100~1/200; 1/100~1/200
B.1/200~1/400; 1/100~1/200
C.1/200~1/400; 1/50~1/200
D.1/200~1/500; 1/50~1/200
正确答案是D