【单选题】由三相电压不平衡电机的过载跳闸,如果变频器的输出端不平衡,则应检查( )。
【单选题】企业专门为满足某一细分市场的需求而提供各种产品或服务属于________。
【单选题】We were greatly ______ by the program performed by Xiao Shengyang on CCTV.
【单选题】The film was so ___ that we were greatly ___ in it.
A.
interesting; interesting
B.
interested, interesting
C.
interested, interested
D.
interesting, interested
【单选题】We were greatly _____ in our investigation by the cooperation of the police. [ ]
【单选题】由三相电压不平衡电机的过载跳闸,如果变频器的输出端不平衡,应检查:( )。