以下可重入表中哪些是循环表?选项: A:(L1: (L2: (L1, a))); B:D(A:(c), B:(e), C:(a, L:(b, A, d))); C: (L: (a, L)); D:(L1:(a, b), (L1, c, L2:(d)), (L2, e, L3:(f, g)), L3); E:(L1: (a, b, L2(x, y)), L2, L3: (s, t, L4:(q, L5:(w, L3, v), r))); F:(x1, (y1, (a1, a2), y3), x3, (z1, z2)) 以下 哪些 表中 发布时间:2024-05-19 20:46:16