文献与考古表明，唐代中后期，“波斯锦”“胡锦”“番锦”通过丝绸之路，不断输入中国，内地也生产“胡氏锦”。这表明（）
A. 外来文化改变了唐代的社会生活
B. 唐代中后期手工业趋于衰落
C. 外来的丝织技术超过了唐朝
D. 中外文化交流互动日益深入
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芜湖是明代中后期著名的浆染业中心，当时松江的白布也要送到芜湖浆染，故有“织造尚松江，浆染尚芜湖”之说。这一历史现象反映出（）
A. 商品生产呈现区域化分工
B. 区域间有着不同的市场需求
C. 手工业技术水平日趋平衡
D. 抑商政策阻碍区域经济发展
Several merchant ships are arriving at the scene of a distress incident. One of the them must assume the duties of the Coordinator Surface Search (CSS). Which of the following statements is TRUE? （）
A. CSS duties are always assumed by passenger vessels，dry cargo vessels，or tankers in that order of precedence
B. The CSS must be established by mutual agreement between the ships concerned
C. A tank vessel should never be assigned CSS duties unless only tank vessels are present
D. The first vessel to arrive at the distress incident is designated as the CSS
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