【单项选择题】
请把吊杆甩到舱口上方好吗？（）
A、A. Will you please swing the heavy derrick over the hatch?
B、B. Will you please swing the derrick over the hatch?
C、C. Will you please lower the derrick over the hatch?
D、D. Will you please top the heavy derrick over the hatch?
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