After school, I often _____ Simon to go home together. [ ]

A. meet up

B. meet up with

C. see with

D. meet on with

轴心受压工字形截面柱，翼缘的宽厚比和腹板的高厚比是根据（）原则确定的。

A.板件的临界应力小于屈服强度fy 

B.板件的临界应力不小于屈服强度fy 

C.板件的临界应力小于构件临界应力 

D.板件的临界应力不小于构件临界应力