问题
选择题
Most of the children enjoy ___________ computer games.[ ]
A. play
B. playing
C. played
D. to play
答案
B
搜题请搜索小程序“爱下问搜题”
Most of the children enjoy ___________ computer games.[ ]
A. play
B. playing
C. played
D. to play
B
16a，其截面面积A=4390mm2，槽钢腹板厚度为6.5mm。槽钢腹板与节点板之间采用高强度螺栓摩擦型连接。共6个M20的高强度螺栓(孔径d0=21mm)，沿杆件轴线分两排布置。试问，当按轴心受拉构件进行强度计算时，吊杆的最大拉应力(N/mm2)应与下列（）项数值最为接近。