单项选择题
A load line for a ship is assigned by the（）.
A.Minerals Management Service
B.Department of Energy
C.Corps of Engineers
D.A recognized classification society approved by the Coast Guard
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单项选择题
A chain stripper is used to（）.
A.prevent chain from clinging to the wildcat
B.clean the marine debris from the chain
C.flake chain from a boat's chain locker
D.clean chain prior to an x-ray inspection
