单项选择题
A.0.0385 B.0.3850 C.3.8500
A.0.25×设备稳定运行率+0.5×到报率+0.25×数据可用率 B.0.5×设备稳定运行率+0.25×到报率+0.25×数据可用率 C.0.25×设备稳定运行率+0.25×到报率+0.5×数据可用率 D.0.5×设备稳定运行率+0.5×到报率+0.25×数据可用率
A.data B.alt C.samples