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Is the peculiar smell of car air conditioner harmful to human body?但是也高不到哪里去……是啊，天启真是个人才。? 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. ?Alter database example set emergency承载着6000余名游客和工作人员的超级邮轮是一个行走的地球村和微缩的小社会，游客的世间百态、悲欢离合，年轻人的奋斗与爱情都在同舟共济的航程中精彩呈现。华人航海官丁凯和菜鸟领队天爱，在这个多元文化的梦想之船上相识相知，在与旅客、同事、亲人如王子洋、陈安妮、菲儿、船长和船博士等的交集碰撞中，历经波折，见证了彼此的成长、收获了美好的爱情。而由他们见证的，还有各色人等之间的爱与梦想、泪水与欢笑，海阔天空的传奇，不仅是邮轮生活，也是每一个行进中的人生。虽然从前汪直也是这样，但至少不是当着弗朗机面前做的，也是要冒险登陆、航海的。这样，我看看先生的字画，合适就留下，赠与先生一只状元铃。