题目内容

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

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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

It was important, Mr. Collins said, to bear in mind the way people move naturally. He said "the leg is analogous to a pendulum," which can either be let go to swing or driven exactly in a movement.

A. similar
B. comparing
C. corresponding
D. analytical

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