A.220伏 B.380伏 C.600伏 D.6000伏
A.<﹣40℃ B.<﹣70℃ C.<﹣90℃ D.>-40℃
A.0.4MPa~0.5MPa B.0.5MPa~0.6MPa C.0.7MPa~0.8MPa D.0.9MPa~1.0MPa