FLEET OILER REFUELS THOUSANDTH SHIP.   THE FRONTLINE CAREER OF THE U.S.S.NECHES,  FLEET OILER,  WAS CLIMAXED RECENTLY WHEN SHE REFUELED HER ONE THOUSANDTH SHIP, THE NAVY DEPARTMENT ANNOUNCED TODAY.   POST TYPHOON SEAS WERE STILL RUNNING HIGH AS THE THREE YEAR OLD TANKER PUMPED AVAITION GASOLINE AND FUEL INTO THE FAST CARRIER, U.S.S. INDEPENDENCE TO ACHIEVE HER PRESENT SCORE.   THE HIGHLY INFLAMABLE VESSEL, PRIMARILY SERVANT OF COMBAT SHIPS, HAS FACED DIRECT ATTACKS MORE THAN ONCE.   HER BRIDGE FLAUNTS A REPLICA OF A JAPANESE PLANE.   HER COMMANDER HOLDS TWO CIATATIONS FOR REFUELING OPERATIONS CONDUCTED IN THE SOUTH CHINA SEAS.