设计强度为C50的预应力混凝土连续梁张拉时,混凝土强度最低应达到()MPa。 A.3 发布时间:2017-05-19 13:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 设计强度为C50的预应力混凝土连续梁张拉时,混凝土强度最低应达到()MPa。A.35.0 B.37.5 C.40.0 D.45.0
题型:单项选择题 女性,31岁,已婚。自己无意中发现外阴部有灰白色细颗粒状突起,表面粗糙,活检见表皮增生、角化过度,空泡变性,细胞核大,双核,异型核。可做哪些标记以明确诊断()A.HPV6/11B.HSVC.HPV2/4D.HPV16/18E.EBVF.以上均可 查看答案
题型:单项选择题 A certain grocery purchased x pounds of produce for p dollars per pound. If y pounds of the produce had to be discarded due to spoilage and the grocery sold the rest for s dollars per pound, which of the following represents the gross profit on the sale of the produceA.(x-y)s-xpB.(x-y)p-ysC.(s-p)y-xpD.xp-ysE.(E) (x-y)(s-p) 查看答案