题目内容
（请给出正确答案）
A.每mL水中细菌总数＜1000个＜br＞
B.每mL水中细菌总数＜100个＜br＞
C.每mL水中细菌总数＜10个＜br＞
D.每500mL水中细菌总数＜1000个＜br＞
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更多“我国城市饮用水卫生标准规定（）”相关的问题
A、每1000ml水中大肠杆菌＜3个
B、每1000ml水中大肠杆菌＜30个
C、每100ml水中大肠杆菌＜3个
D、每100ml水中大肠杆菌＜30个
E、每500ml水中大肠杆菌＜3个
A、A. With the rapid development of industrialization and urbanization of China's economy, haze appears in a large number of cities and their surrounding areas, which is considered to be one of the major realistic problems facing the sustainable development of China's social economy.
B、B. Along with the stage of China's economy entering the rapid development of industrialization and urbanization, the smog phenomenon has appeared in many cities in China and its surrounding areas, and is considered to be one of the major practical problems facing the sustainable development of China's social economy.
C、C. As China has seen rapid industrialization and urbanization, smog prevails in a large number of Chinese cities and their surrounding areas, and is considered one of the major problems threatening China’s social and economic sustainability.
D、D. With China's economy entering the stage of rapid industrialization and urbanization, smog phenomenon appears in a large number of cities and their surrounding areas in China. It is considered to be one of the major practical problems facing China's sustainable social and economic development.
A、活菌计数法检测细菌总数应选择平均菌落数在30~300之间的稀释度
B、活菌计数法检测细菌总数应选择平均菌落数在200~500之间的稀释度
C、检测食品中菌落总数的培养是48h
D、检测食品中菌落总数的培养是24h
A、MPN法是待测样品经系列稀释并培养后，根据其未生长的最低稀释度与生长的最高稀释度，应用统计学概率论推算出待测样品中大肠杆菌的最大可能数
B、MPN法中从制备样品匀液至样品接种完毕，全过程不得超过20min
C、初发酵实验中，培养24±2h未产气者进行复发酵试验
D、凡BGLB肉汤管产气，即可报告为大货车那个菌群阳性
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