A.three shapes，the highest and lowest shall be red balls，and the middle shall be a white diamond
B.two black balls
C.three shapes; the highest and lowest shall be black balls，and the middle shall be a red diamond
D.three shapes; the highest and lowest shall be black balls and the middle shall be a black diamond
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A.two balls in a vertical line
B.two diamonds in a vertical line
C.a single black ball
D.no shape is shown during the day
A.injured is unfit for duty
B.injured is able to return to work
C.injury results in loss of life only
D.injury is the result of misconduct
A.all mooring lines have a different tension
B.the leeward lines have higher tension than the windward lines
C.the maximum tension of the most heavily loaded line does not exceed the safe working load
D.all horizontal tension forces on the windward lines are no greater than the vertical tension forces
A.The designated person in charge
B.The tankerman
C.The senior able seaman
D.The oiler
A.buoyancy
B.extra storage space
C.additional tank capacity
D.reduced stability
最新試題
During storm conditions on a ship，the mooring tensions should be adjusted so that（）.
Each fire hose coupling on a ship must have threads that meet the specifications of the（）.
Each EPIRB required on a ship shall be stowed in a manner which will permit（）.
Each EPIRB required on an OSV shall be tested using the integrated test circuit and output indicator every（）.
During the month of October the Sun’s declination is（）.
Each life preserver must be readily accessible to the person for whom it is intended while he or she is（）.
Each hose used for transferring vapors must（）.
Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.
During the day，a dredge will indicate the side on which it is safe to pass by displaying（）.
During the manufacture of line，yarns are twisted together in the（）.