A.Snowfall or blowing snow
B.Lack of ability to estimate distance
C.Harsh contrast between sun-illuminated snow cover and the background
D.Hazy horizons with extensive mirage effects
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最新試題
Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.
During transfer operations，a quantity of propylamine spills on deck. According to the Chemical Data Guide，the correct procedure would be to（）.
Each life preserver must be readily accessible to the person for whom it is intended while he or she is（）.
During which condition should the operator of a pedestal crane shutdown operations?（）
During storm conditions on a ship，the mooring tensions should be adjusted so that（）.
During the day，a dredge will indicate the side on which it is safe to pass by displaying（）.
Fire protection regulations for towing vessels allow all of these types of fuel piping，EXCEPT（）.
Fire protection and manning regulations for towing vessels state that the Master or person in charge must ensure that all crew members who have not participated in the drills or received the safety orientation（）.
During which condition should the operator of a pedestal crane shutdown operations?（）
Fire may be spread by which means?（）