跌落式熔断器检查熔断件轴线与铅垂线的夹角应为( )

跌落式熔断器检查熔断件轴线与铅垂线的夹角应为( )

A.15°~30°

B.20°~30°

C.15°~40°

D.10°~30°

正确答案是A