轧钢工网络知识竞赛5解决方案.docVIP

1.当轧辊咬入轧件后，轧辊的圆周速度大于轧件速度的情况，称为（ ）。已选答案:[] 正确答案:[B] HTMLCONTROL Forms.HTML:Option.1 A.前滑 HTMLCONTROL Forms.HTML:Option.1 B.后滑 HTMLCONTROL Forms.HTML:Option.1 C.前摩擦 HTMLCONTROL Forms.HTML:Option.1 D.后摩擦2.对于轧制钢板及带钢的平面轧辊，必须在计算其（ ）的基础上正确设计辊型，保证轧材质量。已选答案:[] 正确答案:[B] HTMLCONTROL Forms.HTML:Option.1 A.弯曲强度 HTMLCONTROL Forms.HTML:Option.1 B.挠度 HTMLCONTROL Forms.HTML:Option.1 C.扭转强度 HTMLCONTROL Forms.HTML:Option.1 D.弯扭组合强度3.金属发生塑性变形时产生加工硬化现象是（ ）的重要工艺特点之一。已选答案:[] 正确答案:[B] HTMLCONTROL Forms.HTML:Option.1 A.热轧 HTMLCONTROL Forms.HTML:Option.1 B.冷轧 HTMLCONTROL Forms.HTML:Option.1 C.轧制 HTMLCONTROL Forms.HTML:Option.1 D.锻压4.奥氏体是碳在（ ）晶格铁中形成的固溶体。已选答案:[] 正确答案:[C] HTMLCONTROL Forms.HTML:Option.1 A.体心立方 HTMLCONTROL Forms.HTML:Option.1 B.密排六方 HTMLCONTROL Forms.HTML:Option.1 C.面心立方 HTMLCONTROL Forms.HTML:Option.1 D.晶格立方5.不属于执行桥式起重机作业十不吊范围的是（ ）。已选答案:[] 正确答案:[C] HTMLCONTROL Forms.HTML:Option.1 A.直接用钩头吊挂重物 HTMLCONTROL Forms.HTML:Option.1 B.重量不清，视线不明  HTMLCONTROL Forms.HTML:Option.1 C. 被吊物捆绑牢，符合安全要求 HTMLCONTROL Forms.HTML:Option.1 D.违章指挥6.轧机机架是轧钢机中重要的（ ）零件。已选答案:[] 正确答案:[B] HTMLCONTROL Forms.HTML:Option.1 A.消耗性 HTMLCONTROL Forms.HTML:Option.1 B.永久性 HTMLCONTROL Forms.HTML:Option.1 C.工艺性  HTMLCONTROL Forms.HTML:Option.1 D.三者兼顾7.45#钢的平均含碳量是（ ）。已选答案:[] 正确答案:[C] HTMLCONTROL Forms.HTML:Option.1 A.45% HTMLCONTROL Forms.HTML:Option.1 B.4.5% HTMLCONTROL Forms.HTML:Option.1 C.0.45% HTMLCONTROL Forms.HTML:Option.1 D.0.045%8.直接从事带电作业时，必须（ ），防止发生触电。已选答案:[] 正确答案:[B] HTMLCONTROL Forms.HTML:Option.1 A.有人监护  HTMLCONTROL Forms.HTML:Option.1 B.穿绝缘鞋和戴绝缘手套 HTMLCONTROL Forms.HTML:Option.1 C.戴绝缘手套 HTMLCONTROL Forms.HTML:Option.1 D.绝对服从领导指挥9.当带钢氧化铁皮中的（ ）含量较多时，容易出现欠酸洗。已选答案:[] 正确答案:[B] HTMLCONTROL Forms.HTML:Option.1 A.氧化亚铁 HTMLCONTROL Forms.HTML:Option.1 B.三氧化二铁 HTMLCONTROL Forms.HTML:Option.1 C.铁 HTMLCONTROL Form