列举二甲装置的操作电源油那些?
参考答案:
控制电源,信号电源,继电保护电源,自动装置.
Without the slightest doubt, the new method is________the old one. [ ]
A. superior than
B. more superior than
C. superior to
D. more superior to
应用小拼装实验板完成实验电路要注意哪些事项?