【正确答案】1、Φ50孔为最大实体要求，合格条件为：Dfe≥Dmmvs Da≤Dlms Dmmvs = Dmms –t=φ50.0-0.01=φ49.99 Dfe= Da-f=φ50.015-0.020=φ49.995≥Dmmvs=φ49.99 Dlms=φ50.025 Da=Φ50.015≤Dlms=φ50.025 故孔合格。 2、Φ70的轴为包容要求，合格条件为：dfe≤dmms da≥dlms dmms =φ70.0 dfe=da +f=φ69.990+0.025=φ70.015≥dmms=φ70.00 dlms=φ69.970 da =Φ69.990≥dlms=φ69.970 故轴不合格。