【单选题】The factory has produced ten thousand color TV sets this year, as ______ eight thousand last year.
【判断题】直流电动机转子的作用是产生电磁转矩和感应电动势,电能变为机械能的枢纽。
【单选题】实际工作中,一般以( )作为空间大小的设计依据
【单选题】There are over _____ books in our school library. [ ]
【单选题】What is the cost of undergraduate tuition?
A.
Twenty thousand dollars.
B.
Thirty thousand dollars.
C.
Twenty-seven thousand dollars.
D.
Thirty-eight thousand dollars.
【判断题】更换完成曲轴位置传感器时,应进行功能检查
【单选题】直流电动机的电枢(转子)的作用是( )。