19. The “Bollard” is used for:
(A) Mooring line operation
(B) Oily water treatment
(C) Garbage Disposal
(D) Broken the container while it is on fire
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統計: A(480), B(70), C(58), D(42), E(0) #2523269
統計: A(480), B(70), C(58), D(42), E(0) #2523269