单项选择题
A.0.45 B.0.10 C.1.0
A.0.0m,0.5m,1m,2m,3m B.0.5m,1m C.1m,2m
A.1个白瓶,1个黑瓶,1个原始瓶 B.2个白瓶,1个黑瓶 C.2个黑瓶,1个原始瓶