Because of a small area of kitchen in old dwelling house and unreasonable design,it is discommodious to equip and use gas jar,air exhauster and gas water heater.

• 旧建住宅厨房的面积小、结构设计不合理，给燃气罐、抽油烟机和燃气热水器等的安装和使用带来不便，存在不安全隐患，有必要对其进行改造。