避孕
参考答案：避孕 指采用药物、器具或是利用妇女的生殖生理特点，帮助有性生活的育龄妇女暂时避免受孕。
— Do you feel like________there or shall we take a bus?
— I'd like to walk, but since there isn't much time left, I'd rather we________a taxi.[ ]
A. to walk; take
B. walking; took
C. to walk; took
D. walking; take
在防爆厂房，仪表箱采用正压通风，电缆的引入要通过( )进行密封。
A．导管
B．密封填料函
C．导线
D．固态填料
