北半球，船舶处于台风危险半圆，欲尽快脱离台凤中心应采取（）
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Howmanyadu（）
A. Enough for 700 percent of the persons allowed on board
B. One for each work station and industrial work site
C. Enough for 150 percent of the persons allowed on board
D. Both A and B
Byregulation,lif（）
A. readily accessible
B. securely stowed
C. stored in sealed containers
D. stowed with the emergency provisions
Never__stowedlikethi（）
A. optional cargo should be
B. should optional cargo be
C. should be optional cargo
D. optional cargo must be
Asheaveisa（）
A. grooved wheel in a block
B. line to hold a lifeboad next to the embarkation deck
C. partial load of grain
D. seamans knife
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