当UPS主机有故障鸣叫时,按消音键可消除本次鸣叫,再按该键可恢复故障鸣叫

当UPS主机有故障鸣叫时,按消音键可消除本次鸣叫,再按该键可恢复故障鸣叫

A.正确

B.错误

正确答案是A