A.4.0kg B.4.4kg C.4.5kg D.4.2kg
A.天平,称量15kg,感量0.1g B.恒温干燥箱,105±5℃ C.天平,称量1kg,感量1g D.干燥器
A.GB/T14684-2010 B.GB/T14684-2011 C.GB/T14684-2012 D.GB/T14684-2013