【简答题】根据工件加工要求钻 Φ 6H7孔、分析理论上应该限制哪几个自由度?
【简答题】With the outbreak of the war, flights werestepped up.
【简答题】( )是无产阶级的伟大导师、科学的创始人。
【多选题】根据圆柱体工件加工要求,分析理论上应该限制哪几个自由度。
【单选题】The first large group of Chinese stepped on the land of America was in the 19th century with the outbreak of the Opium War in China and ________ in America.
B.
the abolition of slavery
C.
the California gold rush
【多选题】根据工件加工要求,分析理论上应该限制哪几个自由度。
【判断题】代码print(3,4)是Python 2.x的输出格式