Is this frequency in use?
Is this frequency in use please?
This is SV0ZZZ calling CQ DX! QRZ DX?
You've just start making a call you silly monkey! Why do you ask then, WHO IS REPLYING MY CALL? (which is the true only meaning of the abbr. QRZ?!)
Also you have already placed a DX call. If some is going to reply, it will be definitely a DX station! You don't have to say it again.
Other than fooling yourself in public, why don't you try to read and learn stop being a member of the radio-zoo. Eh?