Shanghai Metro, the world’s longest metro system, is the oldest metro system in China. ( )
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The first line in Xi’an runs from east to west. ( )
A. 对
B. 错
Line 1 was completed after one year of delay in 2013. ( )
A. 对
B. 错
According to the plan, there will be 17 metro lines in Xi'an before 2030, which can service the urban and suburban districts of Xi'an and part of Xianyang. ( )
A. 对
B. 错
影响斜截面受剪承载力的主要因素有 ()。
A. 剪跨比
B. 混凝土强度
C. 配箍率
D. 箍筋强度