【简答题】钢轨气压焊缝和闪光焊缝中的光斑和灰斑缺陷为什么不易探测?
【判断题】闪光焊焊缝中的裂纹是面积型缺陷。 ( )
【单选题】The police don’t disclose all the facts of a murder to the newspapers. That way, there will be some information which only the murderer would know.
【简答题】The murderer will be ___________ for the rest of his life.
【判断题】O型腿穿上正常规格的裤子、下裆缝显短而吊起。
【单选题】胃的容受性舒张主要是通过下列哪一条途径实现的( )