船上的船员属于三个部门：甲板部、轮机部和事务部。（） A: Seamenonboardtheshipareintwodepartments:DeckDepartment,EngineDepartment. B: Seamanonboardtheshipareintwodepartment:DeckDepartment,EngineDepartmentandServiceDepartment. C: TheDeckDepartmentandtheEngineDepartmentarethetwodepartments. D: Seamenonboardtheshipareinthreedepartments:theDeckDepartment,theEngineDepartmentandtheServiceDepartment.