A.1ml B.2ml C.3ml D.5ml
A.稱量2000g,感量1g B.稱量1000g,感量1g C.稱量500g,感量0.11g D.稱量100g,感量0.01g
A.粗砂 B.中砂 C.細(xì)砂 D.特細(xì)砂