单项选择题
A．GD-98-23757 B．983057 C．C22044800205 D．0209576
A．502/3 600/2 B．502/3 600/3 C．502/3 600/1 D．110/3 600/2
A．0.50/3 B．0.50/1 C．0.50/9 D．502/0.50/3
