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Analysis: Since JS can represent an integer range of-2 53 ~ 2 53, the a here has exceeded 2 53, similar to question 6, the maximum value plus a number is still the maximum value. So it's still a? Generally speaking, the factory mode is suitable: whenever a large number of products need to be created and have a common interface, they can be created through the factory method mode. Of the above three modes, the first cannot create the object correctly if the incoming string is wrong, and the third does not need to instantiate the chemical factory class compared with the second, so in most cases, we will choose the third-static factory method mode. ?System.out.println ("before decorator! ");Hollow filter cotton is white and clean before it is used.PE Powder Hot Melt Adhesive:随后，他再次凝目望向嘉靖：父亲一心归顺朝廷，投大明以平倭寇，求开海以富国，登岸示好，你身为一国之君，理应权衡利弊，再不济，也不该妄杀归顺之人。