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【多選題】
把太陽系各行星的運動近似看作勻速圓周運動，則離太陽越遠的行星（ ）
A.
周期越小
B.
線速度越小
C.
角速度越小
D.
加速度越小
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舉報參考答案：
舉一反三
【單選題】What does the man want to do before leaving?
A.
Send some emails.
B.
Have breakfast.
C.
Buy a train ticket.
【單選題】What should Betty do according to the man?
A.
Eat seafood.
B.
Have a good rest.
C.
Exercise more
相關題目：
【單選題】What does the man want to do before leaving?
A.
Send some emails.
B.
Have breakfast.
C.
Buy a train ticket.
【單選題】What should Betty do according to the man?
A.
Eat seafood.
B.
Have a good rest.
C.
Exercise more
參考解析：
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