【简答题】A.In a factory. B.In a company. C.In a travel service. D.In a university.
【单选题】在问诊中得知病人有青霉素过敏史,此情况属于
【单选题】I knew ________ John Lennon,but not ________ famous one.
【判断题】6502电气集中选路顺序是先选l~2线、3~4线,然后再选5~6线。
【单选题】I knew_____ John Lennon, but not ______famous one you know.
【判断题】Gulliver can write a good novel now.
【简答题】有一个真空操作筒体,其外径为 1000 mm ,计算长度为 5000 mm ,钢板有效厚度 4 mm ,材料弹性模量 2.1 × 10 5 。试问该筒体能否满足稳定性要求?稳定性不足,应采用何种措施?