问题
选择题
Great changes _____ in the village in the past few years. [ ]
A. took place
B. take place
C. will take place
D. have taken place
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Great changes _____ in the village in the past few years. [ ]
A. took place
B. take place
C. will take place
D. have taken place
答案：D
16受力钢筋，梁底钢筋可按需要配置。试问，如充分考虑受压钢筋的作用，此梁跨中可以承受的最大正弯矩设计值M(kN·m)，应与下列何项数值最为接近