A.on
B.in
C.for
D.at
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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
A.stronger than during the summer months
B.weaker than during the summer months
C.drier than during the summer months
D.wetter than during the summer months
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.immediately flush the spill with large quantities of fresh water
B.cover the contaminated surface with soda-ash-soaked lime solution
C.add sodium bisulfate on the contaminated surface and spray it down with water
D.move to a position upwind of the spill and allow the product to boil off
A.convection
B.conduction
C.radiation
D.direct contact
A.Bunkering barge alongside
B.Potable water spill on deck
C.Crane hydraulic hose bursts
D.Trim greater than 4 feet
A.Bunkering
B.High winds
C.Potable water spill on deck
A.landing area and sources of vapor ignition
B.main deck
C.engine room
D.drill floor
A.used only for pollution response
B.owned and operated by the US government
C.used only within a barge fleeting area
D.used only on inland waters
A.at work，only
B.in his or her berthing area，only
C.BOTH at work and in his or her berthing area
D.None of the above
最新試題
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Each life preserver must be readily accessible to the person for whom it is intended while he or she is（）.
During the manufacture of line，yarns are twisted together in the（）.
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Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.
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During which condition should the operator of a pedestal crane shutdown operations?（）