下列简支梁整体稳定性最差的是()
A.两端纯弯作用
B.满跨均布荷载作用
C.跨中集中荷载作用
D.跨内集中荷载作用在三分点处
参考答案:A
I would like to propose Mr Harrison ________ the important task. [ ]
A. undertake
B. undertakes
C. undertook
D. will undertake
承、托双方交接集装箱重箱时,应采取什么方式?()
A.件交件收
B.凭施封标志交接
C.磅交磅收