单项选择题
Close the （）, please.
A. hatch coamings
B. hatch covers
C. hatch beams
D. hatch openings
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（）is cargo handling gear.
A.Derrick
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The cargo gear includes（）.
A. derrick, winches, cargo ropes and wires
B. derricks, windlass, capstan
C. hatch covers, derricks, windlass
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