
提问人:网友d*******1
发布时间:2022年4月6日 06:42
[单项选择题]
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 signal
B.Only the stand-on vessel can sound the danger signal
C.Distress signals may be used in place of the danger signal
D.The danger signal consists of 4 or more short blasts of the whistle

