單項(xiàng)選擇題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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1.單項(xiàng)選擇題In order to minimize the effects of a tender vessel，when carrying a cargo of lumber，you should（）.

A.maximize your deck load
B.distribute lumber so that those stowing most compactly per unit of weight are in the upper holds
C.place the heaviest woods in the lower holds
D.keep the vessel's frame spaces free from lumber

2.單項(xiàng)選擇題In observing rig motion while under tow，the period of roll is the time difference between（）.

A.zero inclination to full inclination on one side
B.full inclination on one side to full inclination on the other side
C.full inclination on one side to the next full inclination on the same side
D.zero inclination to the next zero inclination

3.單項(xiàng)選擇題If the cargo gear on your vessel is equipped with a regular guy and a preventer guy，you should（）.

A.let the schooner guy take most of the strain，thus transferring the load to the opposite boom
B.leave the preventer guy slack
C.secure them as close together as possible on deck
D.secure them so the angle between them is 90°at the boom head

4.單項(xiàng)選擇題If reefer spaces are not properly cleaned prior to loading cargo，it will most likely cause（）.

A.mold to develop on commodities
B.malfunction of the refrigeration equipment
C.contamination of the insulation in the space
D.All of the above

5.單項(xiàng)選擇題If a cargo of kerosene were considered too lean to explode，then it must be（）.

A.above the explosive range
B.within the explosive range
C.below the explosive range
D.None of the above