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28. A sphere moves past an observer at 0.6c. What shape does the observer see?
(A) A sphere, slightly smaller than the sphere really is.
(B) A cone, slightly flattened.
(C) An ellipsoid, flattened in the direction of motion.
(D) A hypocycloid, flattened in the direction of motion.

答案：C
難度： 適中


28. A sphere moves past an observer at 0..-阿摩線上測驗