_____ the number of cars, only _____ small number of people have attended the meeting. [ ]

A. Judging from; a

B. Judged; a

C. Judging; the

D. Judged from; the

磁力泵根据工作原理和结构可分为（）。

A、磁力离心泵；

B、磁力漩涡泵；

C、磁力齿轮泵；

D、磁力隔膜泵。