Crossword clues for A system. 3 letters:NORAmerica's health care system is neither healthy, caring, ___ a system: Walter CronkiteSTPUltra 5-In-1 Fuel System Cleaner brandMTANYC subway systemDOSSystem with the REXXDUMP commandNTSSome Windows systemsELOChess skill rating systemASLCommunication system featured in the Best Picture nominees {/Sound of Metal/} and {/CODA/}ELOSystem in which Alireza Firouzja is 2800-ratedECOSystem or type starterQVCNetwork that sells the Fizzics Revolutionary Beer System and the Q-flex Back And Body Massage ToolDOSC: operating systemNESVideo game system that originally came with Duck HuntCPUTablet's systemELOChess ranking system that is also used in MLBDOSC: systemNAVCar speaker system, briefly?GNUOperating system that's "not Unix"TAE___ Bo ('90s fitness system)TAOChinese system of being (more than believing)WIISuper Mario Galaxy systemISMBelief systemASLSpeech system in which 6 and W are the same: Abbr.CGSMetric system (abbr.)BCSOft-criticized college football ranking system: Abbr.ADTBig name in security systemsNESGame system that came with Duck HuntTAI__ chi (exercise system)DDEInterstate Highway System creator: Abbr.FANCirculatory system?ELOChess ranking systemIBMSystem i manufacturerMTAOrg. phasing out its MetroCard payment system by 2023ECOSystem starterNAV___ system (GPS, e.g.)ABOBlood transfusion systemTAE___-Bo (exercise system)ELOChess rating systemBRASupport systemADTBig name in home security systemsECOBio system startELORatings system in chessTAOConfucian metaphysical systemPASSound systems, for shortELORanking system used in e-sportsABOBlood classification systemELORating system for chess players and basketball teamsNHSUK medical system: Abbr.NCRPoint-of-sale system companyADAFirst computer language used for embedded systemsLSDBrit. monetary system