单项选择题
Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?（）
A.Add ballast in the afterpeak B.Add ballast forward C.Alter course D.Reduce speed
单项选择题 Which may ignite fuel vapors?（）
单项选择题 Where would you find the call sign or call letters of the radio station on your ship?（）
单项选择题 To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.
