434 / | HD | EDUCATION AND DEMONSTRATION |
322 | DF | QUESTION OR PROBLEM ELICITING RESPONSE {8} |
327 | DF | .~ Correctness of response indicated to examine by self-operating or examinee actuated means {12} |
335 | DF | .~.~ By means including electrical component {8} |
342 | .~.~.~ Question or problem located on endless belt or reel mounted strip |