classes: lecturer. The subject has only 2 periods so the knowledge has not been fully communicated, the time allocation of the subject is not very reasonable. Morning 3 periods and afternoon 2 periods. curriculum. The subject has only 2 periods so the knowledge has not been fully communicated, the time allocation of the subject is not very reasonable. Morning 3 periods and afternoon 2 periods. facility. The subject has only 2 periods so the knowledge has not been fully communicated, the time allocation of the subject is not very reasonable. Morning 3 periods and afternoon 2 periods. general. The subject has only 2 periods so the knowledge has not been fully communicated, the time allocation of the subject is not very reasonable. Morning 3 periods and afternoon 2 periods.