单项选择题
A.Gross tonnage B.Net tonnage C.Displacement tonnage D.Deadweight tonnage
The mariner must be the final judge of the reliance he ...
单项选择题The mariner must be the final judge of the reliance he can place on the information given in the Admiralty charts and other publications,since they（）.
A.may always be complete and up-to-date B.may not always be complete and up-to-date C.may sometimes be complete and up-to-date D.may not sometimes be complete and up-to-date
A light is（）from Changshanzui,the SE extremity of the i...
单项选择题A light is（）from Changshanzui,the SE extremity of the island.
A.exhibited B.established C.constructed D.built
Integrated Bridge and Navigation Systems(IBS/INS) provi...
单项选择题Integrated Bridge and Navigation Systems(IBS/INS) provide excellent performance and reliable navigation under all conditions by（）.
A.integrating well-proven, harmonizing equipment B.integrating all equipment in the bridge C.an intelligent platform with ECDIS and Radar D.the control center based on ECDIS
