【单选题】Careers Officers ______ contact with young people after they leave school.
【简答题】在液压流动中,因某处的压力低于空气分离压而产生大量气泡的现象,称为( )。
【简答题】在液压流动中,因某处的压力低于空气分离压而产生大量气泡的现象,称为( )。A. 气穴现象或空穴现象
【单选题】制作省市级联菜单功能调用的是下拉列表框的( ) 事件
【简答题】If a student needs advice about careers, ____should consult the career officers.