单项选择题
A.be the first individual to board the craft
B.drain the hydraulic pressure before lowering the craft
C.have a list of the persons assigned to the lifeboat
D.All of the above
单项选择题 （）outlines the Admiralty method of Harmonic tidal analysis for long and short observation periods plus a volume on datums for hydrographic surveys.
单项选择题 （）offers a detailed description of tidal theory and its application to the analysis and prediction of tides and tidal streams.
单项选择题 （）is a comprehensive reference in graphical and textual form of all Admiralty Charts and Publications worldwide（link to Admiralty Charts）listed by region.