docs: def MAO(self,day1,day2,rev=0):
      """ This is MAO(Moving Average Oscillator), not BIAS.
          It's only 'MAday1 - MAday2'.
          乖離率，MAday1 - MAday2 兩日之移動平均之差
  
          return list:
          [0] is the times of high, low or equal
            [0] is times
            [1] is the MAO data
          [1] rev=0:↑ ↓ or -，rev=1:1 -1 0
  
          回傳：
          [0]
            [0] 回傳次數
            [1] MAO 資料數據
          [1] 漲跌標示，rev=0:↑ ↓ or -，rev=1:1 -1 0
      """
      day1MA = self.MA_serial(day1)[1]
      day2MA = self.MA_serial(day2)[1]
      bw = abs(day1-day2)
      if len(day1MA) > len(day2MA):
        day1MAs = day1MA[bw:]
        day2MAs = day2MA[:]
      elif len(day1MA) < len(day2MA):
        day1MAs = day1MA[:]
        day2MAs = day2MA[bw:]
      else:
        day1MAs = day1MA[:]
        day2MAs = day2MA[:]
  
      serial = []
      for i in xrange(len(day1MAs)):
        serial.append(day1MAs[i]-day2MAs[i])
  
      cum = self.make_serial(serial,1,rev)
      #return [day1MAs,day2MAs,serial,cum,self.high_or_low(cum[-1],cum[-2])]
      return [cum,self.high_or_low(day1MAs[-1]-day2MAs[-1],day1MAs[-2]-day2MAs[-2],rev)]