单选题The （）, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.Asingle phaseBtwo phaseCthree phaseDfour phase
单选题
The （）, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.
A
single phase
B
two phase
C
three phase
D
four phase
参考解析
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