利用尺规作图,不能作出唯一三角形的是( ) A.已知两边及其中一边的对角 B.已 发布时间:2017-04-15 11:13 │ 来源:www.tikuol.com 题型:选择题 问题: 利用尺规作图,不能作出唯一三角形的是( )A.已知两边及其中一边的对角B.已知三边C.已知两边及其央角D.已知两角及其夹边
题型:选择题 Which statement is TRUE concerning the danger signal?().A.When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signalB.Only the stand-on vessel can sound the danger signalC.Distress signals may be used in place of the danger signalD.The danger signal consists of 4 or more short blasts of the whistle 查看答案