57.本省輪作田灌溉大體屬:
(A)噴洒灌溉
(B)田埂間灌溉
(C)分區漫灌
(D)水平田埂間灌溉。
答案:登入後查看
統計: A(2), B(6), C(5), D(5), E(0) #2944042
統計: A(2), B(6), C(5), D(5), E(0) #2944042