A.20 B.30 C.60 D.120
A.48 B.72 C.120 D.168
A.2 B.5 C.10 D.30
A.5 B.10 C.15 D.30
A.一方操作、另一方审核 B.操作审核结合 C.先操作再审核 D.先审核再操作