题型:选择题 It has been announced that candidates _______ remain in their seats until all the papers have been collected.A.canB.willC.mayD.shall 查看答案
题型:多项选择题 脚手架设计计算包括()。A.纵向、横向水平杆等受弯构件的强度和连接扣件的抗滑承载力计算B.立杆的稳定性计算C.连墙件的强度、稳定性和连接强度的计算D.立杆地基承载力计算E.破坏性计算 查看答案