A chock（）.<br>A:is a deck fitting used to shackle gear to the deck<br>B:permits easy jettisioning of deck cargo in an emergency<br>C:prevents stress concentration in the bulwark<br>D:provides opening through the bulwark for mooring lines

A chock（）.
A:is a deck fitting used to shackle gear to the deck
B:permits easy jettisioning of deck cargo in an emergency
C:prevents stress concentration in the bulwark
D:provides opening through the bulwark for mooring lines

出自：海船船员证

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