交接箱和箱体两侧应留有()宽的操作空间。 ["50-100mm","100-150mm","100-200mm","100-300mm"]
无缝钢管φ59×4.5,其公称直径为()。 ["59mm","54.5mm","50mm","4.5mm"]
YJ17平整器微调控制轮每转1圈,劈刀位移()毫米。
轴重25t的重载货车在空车位时,主管压力为500kPa,每辆铸铁闸瓦的换算压力为()。 ["120kN","130kN","140kN","150kN"]
卷烟机布带张紧气缸气压调节过高会造成布带()减短。
组织市场包含哪几个方面?