单项选择题
A.0.1NB.0.5NC.1ND.5N
A.(23±5)℃、(50±10)%B.(23±5)℃、(50±5)%C.(23±2)℃、(50±10)%D.(23±2)℃、(50±5)%
A.24H,3dB.24H,7dC.48H,3dD.48H,7d