31÷7=4(周)…3(天),
答:十月份有 4个星期零3天;
故选:C.
--She is angry with me, isn't she? --____.
A.I hope so
B.I hope not
C.I hope no
D.I don't hope
带钢的残余应力会产生板形缺陷,如果带钢的两边受压应力,则带钢将出现两边浪。