A.在收到的郵件上單擊鼠標(biāo)右鍵 B.在收到的郵件上單擊鼠標(biāo)左鍵 C.雙擊鼠標(biāo) D.單擊鼠標(biāo)
A.安裝對(duì)話框 B.設(shè)置對(duì)話框 C.說(shuō)明對(duì)話框 D.向?qū)?duì)話框