题目内容

Modern versions of the machines, called passive-dynamic walkers, have been built for decades and have long been thought useful models of human locomotion.

A. assistance
B. development
C. movement
D. advancement

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The walking robot goes through complex motions; yet explicit computer control is not needed over every joint

A. specific
B. implicit
C. explainable
D. overt

Every practical legged robot will incorporate these principles.

A. utilize
B. combine
C. follow
D. assimilate

If you make the mechanical structures right, for example, adjusting the mass and length of the upper and lower legs to mimic the natural dynamics of walking, the legs do the right thing from physics.

A. mock
B. study
C. imitate
D. minimize

As the forward foot lands, a microchip tells the rear foot to push off.

A. rare
B. hind
C. backward
D. still

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