本题目来源于试卷: Physics Unit8: Rotational Motion,类别为 Generic Physics
[单选题]
The Earth moves about tbs9znc.- ti( 4 a3 bgu:+zqsemhetudh--e,uk :t Sun in an elliptical orbit. As the Earth moves close to the Sun, then,edktuhtu- :- which of the following best describes the orbiting speed of the Earth about the Sun?
A. increases
B. decreases
C. remains constant
D. none of the above
参考答案: A
本题详细解析:
暂无
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