单项选择题
A.工头 B.码头工人 C.装卸工人 D.领班
A. HANDLE WITH CARE B. CAUTION AGAINST WET C. KEEP UPRIGHT D. NO DUMPING
A. the load B. safe working load C. safe working D. safe loading work
A. low-speed control B. inching control C. high-speed control D. slow-speed control
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