A.實(shí)部為負(fù)的共軛復(fù)數(shù) B.相等的負(fù)實(shí)數(shù) C.實(shí)部為零的共軛復(fù)數(shù) D.正、負(fù)兩實(shí)數(shù)
A.0.25 B.0.5 C.1 D.2