参数是指:()
A.参与个体数
B.研究个体数
C.总体的统计指标
D.样本的总和
E.样本的统计指标
参考答案:C
It’s the protection for the trees ___ really matters, _____ how many trees are planted each year.
A.what, other than
B.which, or rather
C.that, rather than
D.as, more than
I类区域物品和表面消毒效果的监测结果判定消毒合格标准为
A.细菌总数≤5cfu/cm2,并未检出致病菌B.细菌总数≤10cfu/cm2,并未检出致病菌C.细菌总数≤15cfu/cm2,并未检出致病菌D.细菌总数≤20cfu/cm2,并未检出致病菌E.沙门氏菌