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7. Ships at anchor should strike the bell for about 5 seconds at intervals not exceeding 1 minute at a time. For ships of 100m or more in length, the horn bell shall be struck at the front of the ship, and the horn gong shall be struck at the rear of the ship for about 5 seconds immediately after the bell. In addition, ships at anchor can also sound three times in a row, i.e. One short, one long and one short, to warn approaching ships to pay attention to the position of the ship and the possibility of collision.大靖虽然不怕遥远的一个岛国，但绝不能让其他国家对此事有非议。1, No reading, study habits“只是在婚姻申请书上盖章而已”的侧面故事将在Paravi上特别发布！一开始，百濑柊伪装结婚，描写了生气的麻宫祥子之后的故事！“就算不选择没有爱的结婚，我也一定要幸福！”并不是只有结婚才是全部！…但是不喜欢寂寞……麻宫为了寻找结婚对象而四处奔走，但是因为理想过高而难以展开婚活……。然后，帅哥动物护士？与牧原唯斗（高杉真宙）的相遇——麻宫能找到真爱吗！？I. RoleAt that time, it was quite confusing to see this bibliography. Mathematics was recommended from high school mathematics to mathematics analysis for mathematics majors. As soon as the computer algorithm class came up, it recommended the big "Introduction to Algorithms" and the theoretical "Data Mining: Concepts and Technologies". It was not suitable for such beginners. Reading should be ladder-shaped, and one cannot eat into a big fat man in one bite. Because I don't want "Daniel" to mislead people, I give the following suggestions: