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  1. A.
    µÈÌå»ýµÈÎïÖʵÄÁ¿Å¨¶ÈµÄÇâÑõ»¯±µÈÜÒºÓë̼ËáÇâï§ÈÜÒº»ìºÏBa2+ + 2 OH¡ª+ NH4+ + HCO3¡ª= BaCO3¡ý + NH3¡¤H2O + H2O
  2. B.
    ³ÎÇåʯ»ÒË®ÓëÉÙÁ¿Ð¡ËÕ´òÈÜÒº»ìºÏ Ca2++OH¡ª+HCO3¡ª= CaCO3¡ý+H2O
  3. C.
    ÁòËáÂÁÈÜÒººÍСËÕ´òÈÜÒº·´Ó¦ Al3++3 HCO3¡ª= 3 CO2¡ü+Al(OH)3¡ý
  4. D.
    ÂÈ»¯ÂÁÈÜÒºÖмÓÈë¹ýÁ¿µÄ°±Ë® Al3++4NH3¡¤H2O = [Al(OH)4]¡ª+4NH4+
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