下列离泊前的准备工作哪些是符合系、离泊工作安全要求的( )? 1二副会同大副、三副实验对讲机以保证信息畅通; 2离泊前,同大副应结合看行水尺,检查首、尾系线情况; 3二副应将安全注意事项向所以在船尾作业人员布置清楚; 4木匠和水手长分别试转起锚机和绞缆机 A. ①②③④ B. ②③④ C. ③④ D. ②③
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