波士顿矩阵的四个象限中,包括下列哪几种因素()? ["明星","金牛","瘦狗","幼童","金猪"]
焊件在焊接过程中,经常要进行哪些热处理?
下列存储单位由小到大排列的是()。 ["TB、KB、MB、GB","KB、TB、MB、GB","MB、KB、GB、TB","KB、MB、GB、TB"]
C-201顶抽余油芳烃含量升高是因为() ["C-202汽提效果差","C-201抽提效果差","溶剂比大","溶剂温度高"]
哪些原因可引起C-202闪蒸() ["底温太低","二次溶剂量大","消泡剂注入量小","进料大"]
随钻测斜仪是用电缆通过专用循环头将电子测斜仪经()送至()。