被减数不变,减数减少,差就请选择CBA6n/G+_3z4g*O's7j9?9{2[6m4R+q:l/E*H8I4~+I6q9z8J
A.增加/E*H8I4~+I6q9z8J
B.减少/E*H8I4~+I6q9z8J
C.不变/E*H8I4~+I6q9z8J