Yes. From nwa.com:

Elite Qualifying Fare Classes on Continental-coded, Continental-operated flights (except where noted)
Elite Qualifying Miles at 150%: J, C, Z, A, D, Y, H, R
Elite Qualifying Miles at 100%: K, M, N, B, V, U, O, F
Elite Qualifying Miles at 50%: Q, I, S, W, T, X, L
Elite Qualifying Segments: J, C, Z, A, D, Y, H, R, K, N, B, V, U, O, F