阵型的优缺点答:因此,可以把上述的“三五二”与“五三二”合并成一个全面型的攻守阵型,即进攻时的“三五二”,防守时变为“五三二”。 从上面的演变历史可以看出来,足球阵型就是在攻与守的矛盾中进化的,时值今日出现了越来越多的新阵型,象3331,4231,3421,4222等等。但是万变不离其中,这些阵型都是立足于3后卫或4后卫的防守体系之...
3071是质数吗?答:4231,4241,4243,4253,4259,4261,4271,4273,4283,4289,4297,4327,4337,4339,4349,4357,4363,4373,4391,4397,4409,4421,4423,4441,4447,4451,4457,4463,4481,4483,4493,4507,4513,4517,4519,4523,4547,4549,4561,4567,4583,4591,4597,4603,4621,4637,4639,4643,4649,4651,4657,4663,4673,4679,4691,4703,...