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(2) a mast light after and above the ring green light; Ships less than 50m in length are not required to display the mast light, but can do so;In response to this problem, Osaka Weaving House has developed a "small black trousers". Through a special process, thick pantyhose containing five layers of fabric is made into a "tapered trouser leg" that can be stretched and gradually changed according to the shape of human legs. After delamination, the feet become very light and thin. This product also has 3 national patents and will soon become a hot item.——ps：感谢唐衣陷阱的打赏，谢谢了。? There have been three industrial revolutions in human history. The industrial revolution has greatly promoted the development of productive forces, brought earth-shaking changes to people's lives, and also changed the original layout of the world's industry. The countries leading the industrial revolution have become the dominant powers in the world. The first industrial revolution made Britain's empire never set. The east wind of the second industrial revolution made the United States and Germany dominate the world. The third industrial revolution maintained the global hegemony of the United States.　　很快也许会见到海瑞，估计也很难喜欢，也要来虚的。