参考答案:C
某车间正在对工序能力进行分析,得知某零件第n道工序加工时,设计尺寸(单位mm)为Tu=20.000,TL=19.991。通过随机抽样,经计算得知=19.995,s=0.00131。
根据以上资料,回答下列问题:
[听力原文]
M: Tickets are four dollars for adults. Children’s tickets are half price.
W: Okay. I’d like two adults and children’ tickets, please.
我来回答:
最新试题