標題: [Phy] PHYSICS 2 MCQ [打印本頁]

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作者: 041087    時間: 2011-5-31 06:36 PM     標題: PHYSICS 2 MCQ

Q5計唔到個答案！THE ANSWER IS B!
Q8點解係B NOT C?

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作者: sdgf3213    時間: 2011-5-31 06:45 PM

5.你每格係5ms 即係一個波要5*4ms=20ms
1/20ms=50Hz

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