单项选择题
A.103% B.105% C.110% D.112%
A.90 B.80 C.105 D.127
A.报告期发展水平与基期发展水平之差 B.报告期发展水平与基期发展水平之和 C.报告期发展水平与基期发展水平之比 D.最末水平与最初水平之比