You can indicate that your vessel is in distress by（）. ["displaying a large red flag","displaying three black balls in a vertical line","sounding four or more short rapid blasts on the whistle","continuously sounding the fog whistle"]
依据华电集团《电力生产事故调查规程》，事故按严重程度划分为哪几个等级？
以下软件或工具，最适用于开展课堂评价的是（） ["问卷星","思维导图","电子表格","Word文档"]
在美国，（）岁以上男子享有“先生”的称呼。 ["A.18","B.16","C.12","D.15"]
私人银行产品销售的风险合规管理要点包括（）。 ["防范飞单风险","匹配销售","规范风险测评行为","第三方产品需签署代理风险声明书"]
断路器的灯光监视和音响监视的含义是什么？
