單項選擇題When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to（）.
A.winch speed
B.boom strength
C.load radius
D.cable strength
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1.單項選擇題When（）clean ballast water from any vessel，an application shall be made to Harbor Authorities for approval.
A.discharging
B.recircling
C.loading
D.taking in
2.單項選擇題What would be prima facie evidence of unseaworthiness? （）
A.Overloading
B.Overstowage
C.Overbooking
D.Overcarriage
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