If I know more than one of the LxC-supported languages, can I participate in more that one LxC component of a single course?
Yes, but probably only as a voluntary “extra”. All of the LxC components replace the same 10 to 20 percent of the non-LxC assignments in a course. So if you participate in more than one LxC component you will have to do more than 100 percent of the required course assignments, unless the course instructor determines that a second LxC component can replace some additional portion of the non-LxC workload. Ask, but don’t count on it.