【简答题】A.Leaving for New York. B.Flying back to the office. C.Visiting the new factory. D.Attending the Sales Meeting.
【单选题】开式齿轮传动的设计准则是______。
A.
按齿根弯曲疲劳强度设计,校核齿面接触疲劳强度
D.
按齿根弯曲疲劳强度设计,并考虑磨损的影响,将模数适当增大
【单选题】-When did Mary come back from New York? -She ______ from New York last Friday.
【单选题】____ forget to write back home as soon as you reach New York.
【判断题】齿面接触疲劳强度 和 齿根弯曲疲劳强度都属于疲劳强度。
【判断题】生产型增值税指计算增值税时,不允许纳税人扣除任何外购固定资产所含的已征增值税,