When we test instrument relevance in practice, we can A: use the residual from the 2nd stage of the 2SLS B: use the residual from the true model C: apply significance test on the 1st stage of the 2SLS D: none of the above.
When we test instrument relevance in practice, we can A: use the residual from the 2nd stage of the 2SLS B: use the residual from the true model C: apply significance test on the 1st stage of the 2SLS D: none of the above.
SLS指的是()
SLS指的是()
如果联立方程模型中的行为方程恰好识别,则可使用2SLS进行估计参数。( )
如果联立方程模型中的行为方程恰好识别,则可使用2SLS进行估计参数。( )
SLS周期长是因为
SLS周期长是因为
SLS工艺全称
SLS工艺全称
Sls技术和
Sls技术和
下列三维打印技术中,哪一组全部都会使用到激光:( ) A: SLA,FDM,SLS B: FDM,PolyJet,SLS C: SLA,SLS,LDM D: FDM,SLA,LDM
下列三维打印技术中,哪一组全部都会使用到激光:( ) A: SLA,FDM,SLS B: FDM,PolyJet,SLS C: SLA,SLS,LDM D: FDM,SLA,LDM
下列三维打印技术中,哪一组全部都会使用到激光:( ) A: FDM,PolyJet,SLS B: SLA,PolyJet,SLS C: SLA,SLS,LDM D: FDM,SLA,LDM
下列三维打印技术中,哪一组全部都会使用到激光:( ) A: FDM,PolyJet,SLS B: SLA,PolyJet,SLS C: SLA,SLS,LDM D: FDM,SLA,LDM
SLS的中文名称为
SLS的中文名称为
SLS技术不需要预热
SLS技术不需要预热