因此,本实用新型拔塞方便,而且不影响热水瓶原有的保温效果。
The possibility of suck-back of fume cupboard exhaust gases into building air intakes, open Windows or the breathing zone of people working on the roof or in other buildings should be investigated.应该调查通风橱废气回吸至房屋内的进风口、打开的窗户或者房顶工作人员的呼吸区域或者其它房屋的可能性。