52.单选题 The operational level maintains direct control over the performance of all functions within the designated area of responsibility in accordance with proper procedures and under the direction of an individual serving in the management level for that area of responsibility。支持级指在操作级或管理级人员的指示下工作，在海船上履行指定的任务、职责、责任等有关的责任等级。A. 正确B. 错误