각 코스의 소요시간 SR 100: 30 to 100 Hours of study SR 110: 20 to 50 Hours of study SR 205: 30 to 50 Hours of study SR 206: 10 to 20 Hours of study SR 210: 30 to 50 Hours of study 코스의 상관관계와 가능한 연구주제...