( )起动方式不适合作为笼型转子异步电动机起动方式。
A．全压 B．电抗器减压C．转子串电阻 D．Y-△降压
参考答案：C
Can Tom and his father ________? [ ]
A. swimming
B. swim
C. to swim
D. swims
蛋黄系数是指蛋破开后放在平板上，蛋黄的最高点除以蛋黄直径的数值。( )
