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【简答题】
指出下列方程所表示的曲线: (1)方程 表示平面 1 上的 2 曲线 ; (2)方程 表示平面 3 上的 4 曲线。
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皮皮学刷刷变学霸
举一反三
【单选题】危险源识别方法中，具有简单易懂、容易掌握，可以事先组织专家编制检查内容，使安全、检查做到系统化、完整化，但只能作出定性评价的方法是（ ）。
A.
专家调查法
B.
事故树分析法
C.
故障树分析法
D.
安全检查表法
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