单项选择题
For pumping the bilges，a 54 foot long “T-Boat”，which is not a ferry，but is certificated to carry 30 passengers，must be fitted with at least（）.
A.one fixed power pump and one portable hand pump
B.one fixed hand pump and one portable hand pump
C.two portable hand pumps
D.either "A" or "B"
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相关考题
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单项选择题
For optimum stability during jacking operations，mat ballast tanks or spud cans should be（）.
A.empty
B.fully ballasted
C.partially ballasted
D.sealed -
单项选择题
For means of abandonment of a ship，which type of embarkation does not require prior approval by the Coast Guard?（）
A.Movable ladders
B.Fixed ladders
C.Safety booms
D.Elevators -
单项选择题
For H2S detection，sensitized tapes indicate H2S presence by means of discoloration of an exposed spot on the tape. The shade of the color on the spot depends upon the concentration of H2S and（）.
A.air temperature at the time of the exposure
B.air pressure at the time of the exposure
C.humidity at the time of exposure
D.duration of the exposure
