You'll be able to Review a waveform of one period by using a waveform of another period or Review using a Formerly measured waveform on exactly the same examination issue. Website page 69: InteractionCh?i cá c??c là b?n ?ang s? d?ng nh?ng ??ng ti?n có giá tr? th?c t? ?? ??t c??c. N?u th?ng b?n s? nh?n ???c m?t kho?n ti?n th?t và n?u thua thì