You can find Chinese works ______ foreign works.[ ]
A. as well
B. also
C. as well as
答案:C
除南极洲外,其他各大洲皆有分布的气候类型是[ ]
A、热带雨林气候
B、温带海洋性气候
C、地中海气候
D、亚热带季风气候
低压变频器指输入电源电压为110∽1kV中、小容量的变频器,直接采用()等半导体元件可以实现变频。
A.GTR
B.IGBT
C.SCR
D.PIC