A.在合同簽訂前 B.在合同簽訂時 C.在合同簽訂后 D.隨時
A.房地產(chǎn)買賣經(jīng)紀業(yè)務 B.房地產(chǎn)租賃經(jīng)紀業(yè)務 C.房地產(chǎn)轉(zhuǎn)讓經(jīng)紀業(yè)務 D.房地產(chǎn)抵押經(jīng)紀業(yè)務