【单选题】The policemen ______ the house again and again, and finally found the evidence.
【判断题】Synonyms always have the same connotations.
【单选题】The policemen found envelopes identical _______ those used to post the letters.
【单选题】常见的齿轮材料20CrMnTi的最终热处理工艺应该是:
【单选题】常见的齿轮材料20CrMnTi的最终热处理工艺应该是
【多选题】下列说法正确的是 ( )
B.
工程上通常会根据零件的结构特点,将其分为四大类:轴、套类、轮、盘类、叉架类和箱体类
C.
轴、套类零件一般采用一个视图即主视图表达主体结构,对零件上的槽、孔等结构,采用局部剖视图、断面图、局部放大图等方法表达
D.
轮、盘类零件 一般将非圆视图作为主视图,且轴线水平放置,并根据需要将非圆视图画成剖视图
【判断题】Synonyms always have the same connotations.
【单选题】During their ____ on the club, the policemen found illegal drugs.
【单选题】Synonyms always have the same connotations.