Film has a much shorter history, especially when __________ such art forms as music and painting.

A．having compared to

B．comparing with

C．compare with

D．compared with

直流供电面板有（）独立的电源输出，均可分别工作于（）和（），由LED指示灯来指示，LED指示灯对应于恒流，反之对应于恒压，每路电流输出最大500MA。