问题
选择题
Last weekend I went to the library __ some books on how to protect environment.[ ]
A. to borrow
B. borrow
C. borrowed
D. borrowing
答案
答案：A
搜题请搜索小程序“爱下问搜题”
Last weekend I went to the library __ some books on how to protect environment.[ ]
A. to borrow
B. borrow
C. borrowed
D. borrowing
答案：A
=190kN/m2，则基础尺寸合理选项为（）m。（）