剖视图的名称用()表示。 ["数字","公式","字母","箭头"]
常用的护脚阻滑措施为在滑坡体下部的堤脚附近堆放土袋、()、石笼等重物。 ["麦秸","块石","稻草","树枝"]
综合服务模型是指()。 ["Best-Effort service","Integrated service","Differentiated service","Best service"]
剖视是在机体适当位置用一假想剖切平面将其切开。()
当有滑坡可能时,可在滑坡体外采取()措施,以增加抗滑力。 ["护脚阻滑","开挖","截渗","堵漏"]
罐区如何防止串油事故的发生?