ڴ Ӱ, ڴ ̳ ,֡ ϰ ԡ ؾ ұ?, ſٸ? ϴ ִٸ? ٴϴ ȸ簡 ʴ ٸ? Ƽ ϴ ɱ? ̷ и ϸ ƾ ϴ ɱ? ħ ɸС 츮 ϴ, ؾ ϴ ãش. ư ڽŸ ذ ã ֵ ָ, Ҹ(calling)̶ Ͽ ֿ 䵵 Բ ϰ Ѵ. 20 Ѱ ɸ а , Ҹ ѳ 20 л 30~50 ε鿡 λ ãִ ȳ ؿ ִ. ° οϴ ̵鿡 ٴ γ ζ åϰ ̴ dz ʴ´. ﰢ ȿ ó ƴ϶ ü¡ Űִ ó ϸ, ڽŸ ߽ Ͽ λ ư ִ ü ˷ش. å ֺ ȯ濡 鸮 ʰ ڽ ϴ ã غؾ ϴ ǿ ǹ ְ Ҵ.
ɸпҸ ϰ б ķ۽ ӱ̴. б ȸ ɸС, ɸС 3 ǿ Ǿ, б ΰ ൿ ء ù б ǿ Ǵ ɸ ڽ ϰ ư ̵鿡 ū ִ. б а ʿ ϴ 縦 ã õϴ ߴ. Ϳ ۷ι λûζƮŴƮƮ ڸ λƮ Ȱϸ , ɸм, ߴ. ϰ ڽ ϴ ̵ ʹٴ ߴ. Ͽ б 㱳 , ɸ ڻ ϰ ڻ ƴ( ɸ ). ѱġȸ ġڰ ϰ Ī ɸ 20Ⱓ Ի CEO ڽ ã ̵鿡 ɸ Ī, ؿ ִ. å ̲ (2016), ԡ(2017) ִ.
η ſ ʿ ɸ1 [] : ǹ ִ ϰ ֽϱ?1. ٽ ϴ ð 2. , ϱ , 3. ߽ ưٴ 4. ߽ 5. ϰ 6. ߽ 2 İ [] : ϴ 忡 Ƿ1. Ȱϰ 2. ִ ã 3. , Ŵ ȭ 4. Ͽ ǹ̵ ̵ ٸ 5. Ű ϴ 6. ǥ ̷¼ ϴ 7. ڽ ϸ Ű 8. ٸ ͵9. ٸ ִ Ե ȴ 10. 츮 Ǿ ִ 3 ó ִ [] : κ Ű ϴ 1. ϴ 2. óϴ 5 ľ϶ 3. ʴ ɱ 4. 븮, 縦 ϴ 5. ʴ ִ 6. ϸ þ߰ о 7. ȸ ο췯 ƴϴ4 鸮 [] : ׳ 1. ϵ λ ӽϴ 2. ִ о 3. ֺ ʴ? 4. Ե ϱ ȴٸ ϴ 5. ͵ ̴ 6. ôؾ VS ô ƾ 7. ä ֱ 5 [] : ִ ƴ϶1. ƹ͵ Ȯ ٸ 2. ΰ Ÿ ϰڴ3. ٴϴ ȸ ʴ´ٸ4. ٲ 3 5. λ ª, ϴ 6 [߽] : ϰ Բ 1. ٴ ϱ 2. ǹ ִ, ü, ϴ 3. ڼ, Ƽ µ 4. ư ηϡ߽ ư ִ