近两年，北京机电控股公司经济运行十分艰难，许多经济效益指标都低于行业平均水平，但唯有销售毛利率较高，这一现象引起我们的关注，同时也引伸出一系列问题：既然我们的销售毛利不低（高于机械工业平均水平４．５个百分点），但我们的亏损企业和亏损额近两年来却居高不... In the past two years, Beijing Mechanical & Electrical Holdings Co., Ltd.’s economic operation has been very difficult. Many economic indicators have been below the industry average. However, only the gross profit margin for sales is high. This phenomenon has attracted our attention and has also led to a series of problems. Our gross profit of sales is not low (4.5% higher than the average level of the mechanical industry), but our loss-making enterprises and losses have been high in the past two years...