一台并励直流发电机，正转能自励，若反转也能自励.
参考答案：错
蛔虫卵不可能存在的部位是（ ）
A．蔬菜上
B．土壤里
C．猪肉里
D．人的小肠里
What is even more important is_____ the earth cooled down, water began to appear on its surface.
A．that
B．that as
C．which
D．which as
