In terms of scope or range, debate motions fall into three categories: open motion, closed motion and semi-closed/semi-open motion.
举一反三
- A semi-open motion is also semi-closed motion.
- In terms of content, debate motions can fall into three categories: fact, policy and value.
- The camshaft is used to open and close the valves with the motion of the pistons.
- Which of the following motions exhibit no impulse in a cam mechanism? A: Constant acceleration motion B: Harmonic motion C: Cycloidal motion D: 3-4-5 orders polynomial motion
- Which of the following motions will cause flexible impulse in a cam mechanism? A: Constant velocity motion B: Constant acceleration motion C: Harmonic motion D: Cycloidal motion