2.0LMondeoEATC系统使用无碳刷鼓风机马达,它的部件()
A.定子是永久磁铁
B.转子是永久磁铁
C.转子、定子均是永久磁铁
D.定子是线圈绕阻
参考答案:B
After having some alcohol, drivers tend to _____ speed when passing streets with less people. [ ]
A. pull up
B. put up
C. rise up
D. pick up
一号线地铁列车贯通道密封性遭破坏的可能原因是什么?