单项选择题

In preparing a cargo space for receipt of a shipment of bagged cargo，which instruction for laying dunnage should be followed? （）

A.Use either 1 or 2 tiers of dunnage，spacing the pieces in each tier a foot apart，and lay pieces in the bottom tier diagonally to the ship's side
B.Use 1 tier of dunnage，laying the pieces tightly together to form a solid floor over the steel deck
C.Use 2 tiers of dunnage，spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier 6 inches apart
D.Use 2 tiers of dunnage，spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier together

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In order to minimize the effects of a tender vessel，when carrying a cargo of lumber，you should（）.

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D.zero inclination to the next zero inclination

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