【判断题】制造直径为 200mm 的轴应选用 45 钢而不应选 42CrMo 钢。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【简答题】YB32—200 型压力机液压系统由哪些基本回路组成? prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【判断题】Many people are fond of hot-pot very much .
【判断题】某种碳钢的牌号是 ZG200-400,那么它是一种铸钢。 ( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【简答题】( ) While the hot pot is kept simmering, ingredients are placed into the pot and are cooke d at the tabl e .
【单选题】The flowers_in the big pot are sunflowers.
【简答题】YB32—200 型液压压力机液压系统工作原理是什么? prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>