要在硬质合金上加工出φ0.05mm的盲孔,可采用的加工方法是() ["电火花加工","机械钻孔加工","线切割加工","水射流加工"]
患者,男,52岁。因视物模糊来院,影像学检查如下图。
该患者最有可能的诊断是() ["颅咽管瘤","下丘脑胶质瘤","海绵状血管瘤","垂体腺瘤","脑膜瘤","室管膜瘤"]
升麻具有的功效是() ["疏散风热","解毒利咽","凉血止血","清热解毒","止血止泻"]
有关电解磨削错误的论述是() ["采用钝化性的电解液","设备经济性好","生产率高于机械磨削","加工精度好于电解加工"]
简述对布氏硬度试样试验面的加工要求。
在布氏硬度试验中施加试验力时应注意什么?