试题与答案

三相电机电源三角形接法和星型接法,前者启动电流为后者的()倍,VVVF驱动的电梯电机

题型:填空题

题目:

三相电机电源三角形接法和星型接法,前者启动电流为后者的()倍,VVVF驱动的电梯电机采用()接法

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:健康成人由肾小球滤出的原尿成分除了不含血细胞和大分子量的蛋白质外,几乎与血浆没有差异。葡萄糖、钠离子和小分子量的胱抑素C、β2微球蛋白均可在原尿中出现。因此,本题正确答案是C。

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