单项选择题
General requirements for a vessel’s radiotelephone station log are that（）.
A.logs must be kept in an orderly manner B.erasures are not allowed C.it must identify the vessel's name and official number D.All of the above
单项选择题 General information on enroute weather and climate is found in（）.
单项选择题 Fusible-link fire dampers are operated by（）.
单项选择题 From your position you observe a rotating white and green light to the north. This light is most likely（）.
