A.4個中間值的算術(shù)平均值 B.6個中間值的算術(shù)平均值 C.8個中間值的算術(shù)平均值 D.全部試樣檢測值的算術(shù)平均值
A.0.1MPa B.0.5MPa C.0.01MPa D.0.05MPa
A.1N B.5N C.10N D.50N