FLC OF A WDB TOOK EVASIVE ACTION CLB AND TURN TO AVOID ANOTHER ACFT CONVERGING THROUGH THEIR FLT PATH.

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ON DEP RWY 22R; EWR; CLBING. CLRED FROM 6000 FT TO 10000 FT; TURN R HDG 290 DEGS. ATC CALLED TFC AT 2 O'CLOCK; 8500 FT VFR SQUAWK; UNVERIFIED. WE WERE CLRED; TURN R HDG 330 DEGS; 'WBOUND.' WE READ BACK THE CLRNC AND ASKED THEM TO CALL THE TFC AGAIN. TFC AGAIN CALLED AT 2 O'CLOCK; 8500 FT; WBOUND. ATC THEN TOLD US TO LEVEL AT 8000 FT FOR THAT TFC HE WAS NOT IN CONTACT WITH. LEVELING AT 8000 FT THE SO SAW THE TFC FIRST; A BONANZA DSNDING JUST AHEAD AND R VERY CLOSE. THE CAPT (PF) PITCHED UP AND TURNED R TO AVOID THE TFC; CAUSING AUTO SLAT EXTENSION. AT TOP BUG WE HAD JUST BEGAN TO LEVEL AT 8000 FT AND THE BONANZA WAS DSNDING JUST ABOVE US; ABOUT OUR ALT. OUR PITCH AND TURN ALLOWED THE TFC TO GO UNDER THE NOSE OF OUR AIRPLANE (DC10). WE TOLD ATC IT WAS VERY CLOSE; THEY DID A NICE JOB OF TRYING TO GET US AROUND THAT TFC AND WE WERE CLRED TO 10000 FT AND TO CHANGE FREQS. FAA NEEDS TO REQUIRE ALL HVY AND LARGE ACFT TO HAVE TCASII. WHY ARE WE EXCLUDED FROM THIS REQUIREMENT? ARE WE NOT AS IMPORTANT AS AN AIRPLANE FULL OF PAX? 'ONE LEVEL OF SAFETY!' WE WERE ABOVE THE CLASS B. I'M GLAD THE BONANZA HAD HIS XPONDER ON AND IT HAD MODE C AND IT WORKED. IT'S GOOD THAT CTR WAS PERSISTENT CALLING VFR TFC IN VMC CONDITIONS. I'M GLAD TO BE STILL FLYING A 3 PLT AIRPLANE WITH THAT EXTRA SET OF EYES IN HVY TFC WHICH IS ONLY ONE OF MANY REASONS FOR FLYING 3 PLT AIRPLANES -- SAFETY!!