A.0.5m/s B.1m/s C.2m/s D.1.5m/s
A.先讀大數(shù)后讀小數(shù),讀至0.2℃ B.先讀大數(shù)后讀小數(shù),讀至0.1℃ C.先讀小數(shù)后讀大數(shù),讀至0.2℃ D.先讀小數(shù)后讀大數(shù),讀至0.1℃
A.5m B.10m C.20m D.30m