为保证受弯构件斜截面的受弯承载力,受力钢筋断点的位置距其理论断点至少( )。注:各选项中的d为被截断钢筋的直径
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