For each examination the Commission shall determine the parts into which the examination shall be divided and the weight to be assigned to each part. The parts which shall be recognized may include: written test, oral interview, performance tests, evaluation of education and experience, physical examination including agility and physical fitness tests, mechanical aptitude and intelligence and psychological test; but no oral or practical examination shall be held except in the presence of the examiner. Failure to reach satisfactory standards in any part of an examination shall cause the rejection of a candidate without regard to the grade(s) attained on other parts of the examination. (Amended 1-26-99.)