BTS3002C与UPS的接口主要是上报UPS告警，以下不通过该接口的告警是（）

A.UPS与防雷箱的通信链路告警

B.UPS市电掉电告警

C.蓄电池欠压告警

D.UPS逆变器故障告警

选出不是顾客讨价的句子：()。

A、Could you come down a bit?

B、I can give you no more then 30 dollars. Can you sell it for that?

C、How much is the large size?

D、That sounds reasonable. But could you give me a 10% discount?