Part time job, bubble group No.: 151090 Welcome to join!
Please leave your own area. It's better to leave your own work nature, working years, contact information, etc The more detailed the better, it is convenient for everyone to contact and help each other!!
I have a question for you, prawns;A 6-storey dormitory building needs 28 meters of external water for water supply. What kind of method should be adopted for water supply;Is it water feeding or water feeding??Why?What's the difference?