已知oa垂直ob oc垂直od∠aod=∠cob,求∠cob
1年前1个回答
OA垂直OB OC垂直OD ∠AOD=4∠BOC 则∠AOC=
1年前1个回答
OA垂直OB,OC垂直OD,若角BOC=a,请你用a表示角AOD
1年前1个回答
你能帮帮他们吗
精彩回答
---When shall we travel to Australia, this year or next year? ---______ is OK. You decide.
1年前
1年前
For many years, no one could communicate with people who had been born without hearing.
1年前
《北京的春节》重点写了腊八、腊月二十三、除夕、元旦、正月十五这几天过节的内容。判断正误。
1年前
阅读理解 Dear Li Ming, Now we are on the farm of our village in the west of England
1年前