单项选择题
夹子用完了。（）
A. Clamps have been used up. B. Lashing wires have been used up. C. Twist locks have been used up. D. Turnbuckles have been used up.
单项选择题 请打开货灯。（）
单项选择题 大副告诉装卸工人不要用钩子装袋装货。（）
单项选择题 2号舱口处的起货机出故障了。（）
