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單項(xiàng)選擇題

What is the main purpose of dunnage（）.

A.To act as ballast for light vessels
B.To provide ventilation and drainage for cargo
C.To secure the tarpaulins in place
D.To support weakened bulkheads

單項(xiàng)選擇題

What is the bow type anchor shackle primarily used for（）.

A.Chain to chain connections
B.Chain to anchor connections
C.Kenter link to anchor connections
D.Wire rope connections