关于食品中菌落总数,下列说法不正确的是()
A. 反映食品卫生质量的优劣
B. 食品中菌落总数与疾病有直接关联
C. 反映食品卫生措施和管理情况
D. 是判断食品清洁状态的标志
The Great Barrier Reef is included on the World Heritage list because()
A. it has the most beautiful seascape in the world
B. it has the greatest number of islands in the world
C. it has the most diverse and complex marine life in the world
D. it has the longest coast in the world
有毒作业分级主要采用毒物危害程度级别、有毒作业劳动时间、毒物浓度超标倍数三个指标来衡量有毒作业的危害条件,共分为()个级别,即()
A. 四;Ⅰ级Ⅱ级Ⅲ级Ⅳ级
B. 五;Ⅰ级Ⅱ级Ⅲ级Ⅳ级Ⅴ级
C. 五;0级Ⅰ级Ⅱ级Ⅲ级Ⅳ级
D. 四;0级Ⅰ级Ⅱ级Ⅲ级