A.dead-reckoning position B.running fix C.estimated position D.fix
A.heaving line B.lead line C.manrope D.mooring line
A.aground B.at anchor C.not under command D.being towed
A.published every year and require no corrections B.published every second year and must be corrected C.published every five years and require no correction D.accurate thru NM number on title page and must be corrected
A.Mention signal stations and ice，storm，traffic and port signals B.Give the international numbers of lights C.Give the correction of the lights and fog signals D.Give the information on the lights and fog signals
A.Weekly Admiralty Notices to Mariners B.The Mariners Handbook C.Ocean Passages for the World D.Symbols and Abbreviations used on Admiralty Charts，Chart 5011
A.danger，stay away B.all is clear，it is safe to pass C.all is clear，it is safe to approach D.a distress signal
A.atmospheric pressure B.wind speed C.relative humidity and dew point D.wind chill factor
A.increasing the righting moment B.decreasing the vessel's displacement C.increasing the reserve buoyancy D.shifting the CG（center of gravity）off center
A.plane tangent at one point B.cylinder tangent at one parallel C.cone tangent at one parallel D.series of cones tangent at selected parallels
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