because this is just one of my homework case study! But it is a real case of my lecturer!

Water heater Case! Thanks Sam! I will consider your ideas! Thanks for giving me comment!

HaHa! Sound good! A good Idea! I like it same as apprentice!

The bellow is a case study! About 13 years ago, I was working as a technical engineer with a subsidiary company of Wembly Industries. One day, I received a call...