变电站选站时应应避让B.c级污区;如不能避让,变电站宜采用GIS、HGIS设备或全户内变电站。()
A. 正确
B. 错误
COW洗舱机洗到()时,首先将用于洗舱泵转数降下来,然后关闭COW支管等阀,停止全部洗舱机。
A. 0°
B. 45°
C. 90°
D. 180°
According to F. de Saussure, ()refers to the abstract linguistic system shared by all the mem- bers of a speech community.
A. parole
B. performance
C. langue
D. Language