The forms of fluid motion in impeller include A: Circular motion B: Relative motion C: Vertical motion D: Absolute motion

There is one and only one ( ) on the various machine tools. A: main motion B: feed motion C: cutting motion D: tool motion

Which of the following is NOT an example of accelerated motion? A: Vertical component of projectile motion B: Circular motion at constant speed C: A swinging pendulum D: Earth’s motion about sun E: Horizontal component of projectile motion

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

What is the common issue that both value motion and policy motion should deal with？ A: To set a standard B: To call for action C: To analyze the context of the motion D: To analyze the need of the motion

6 integrals of motion can be completely determined for the equations of motion in the two-body problem.

The principle of film and television is the application of the ( ) of the human apparent motion perception. A: stroboscopic motion B: autonomous motion C: induced movement D: post-movement effects

Which of the following is not necessary for motion analysis? A: Justifying the feasibility of the plan. B: Defining key terms. C: Determining the motion type. D: Analyzing the context of the motion

when drilling, the drill rotates and moves axially. Thus, The main motion is the motion of the drill.