1. What is thespeaker’s attitude towards Warren Edward Buffett?_______.2. What is thespeaker's attitude towards Tom Cruise?_________.3. What is thespeaker’s attitude towards Napoleon?_______________.
Cage type induction machine
A. 电气设备
B. 鼠笼式感应电机
C. 发电机
D. 电工工具
fixed frequency
A. 定频
B. 发电机
C. 电气
D. 电源
variable frequency
A. 电动的
B. 机械的
C. 变频
D. 电磁的