土的抗剪强度的影响因素中,最重要的是( )
Goods are carried by several of transport--on road or rail, by sea or air.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
钢结构设计规范规定:普通螺栓的抗剪强度设计值,取相同钢号钢材的抗剪强度设计值的0.8倍。
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