根据我国《海上交通》规定,下述正确的有: 1船舶发生交通事故,应当向主管机关递交事故报告和有关资料; 2主管机关认为船舶对港口安全具有威胁时,有权禁止其进港; 3主管机关有权确定交通管制区、港口锚地; 4禁止船舶损坏助航标志和导航设施(5.0分) A. ①②④ B. ①②③④ C. ②③④ D. ①②③
【简答题】If a is not qualified, an immigration professional often points out the reasons why his application is refused and tries ______ to help him become qualified.