The diagram below shows how a central heating system in a house works.
2 Corrections
Band
- Band 5.5View annotated correction →
- Task Achievement
- Band 4.5
- Coherence and Cohesion
- Band 5.5
- Lexical Resource
- Band 6.0
- Grammatical Range and Accuracy
- Band 5.5
The given picture illustrates how a central heating system operates in a typical house in order to keep internal climate and tap water at a pre-set temperature. The process runs through two stages, starting at a transitory state until reaching a steady state.
- Band 6.0View annotated correction →
- Task Achievement
- Band 6.0
- Coherence and Cohesion
- Band 6.0
- Lexical Resource
- Band 5.5
- Grammatical Range and Accuracy
- Band 5.5
The given diagram shows how a central heating system of a house works. As is observed from the illustration, the central heating machine comprises several mechanical aspects and forms a complex system.