已知某钢筋混凝土梁中的1号钢筋外包尺寸为5980mm,钢筋两端弯钩增长值共计156mm,钢筋中间部位弯折的量度差值为36mm,则1号钢筋下料长度为 () 。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧