cecilia

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5

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0.00%

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Lv 1

發問 18 回答 3

2016-06-03 1:14 am

Can someone please translate this text ? (Chinese I think)?

2016-03-02 1:52 am

What would you observe if the air was removed from a bell jar containing a ringing mobile phone?

2016-03-01 5:45 am

If you blow across the top of a straw, a sound is made. How could you increase the pitch of the sound?

1

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