问题
单项选择题
Three short blasts of the whistle means（）.
A.danger
B.I am in distress
C.the vessel is not under command (broken down)
D.I am operating astern propulsion
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
Three short blasts of the whistle means（）.
A.danger
B.I am in distress
C.the vessel is not under command (broken down)
D.I am operating astern propulsion
参考答案：D
按要求对此工作表完成如下操作并原名保存：