根据《建筑工程施工质量验收统一标准》,关于计量抽样的错判概率α和漏判概率β,对于主控项目,对应于合格质量水平的α和β均不宜超过()
A.3%
B.4%
C.5%
D.6%
参考答案:C
已知:○+○+○=100,(◎+◎)×○=100, □+○×◎×◎="79" .那么□= ▲ .
Isn’t it time you down to dancing?
A.got; practise
B.get; practising
C.got; practising
D.get; being practised