A. 清洁中段尿培养,菌落计数为<1000个/mlB. 清洁中段尿培养,菌落计数为1000个/mlC. 清洁中段尿培养,菌落计数为l万个/mlD. 清洁中段尿培养,菌落计数为5万个/mlE. 清洁中段尿培养,菌落计数为10万个/ml