Ngày tải lên :
16/06/2014, 07:24
... 1B,2D,3B,4A,5C,6D,7D,8C,9D,10D,11B,12B,13B,14A,15C,16A,17D,18B,19B,20D,21A,22A,23C, 24C,25A,26C,27B,28A,29D ,30 B ,31 D ,32 C ,33 B ,34 C ,35 B ,36 B ,37 B ,38 B ,39 D,40A, 41D,42B,43D,44C,45D,46A,47A,48B,49A,50D, 51A,52C,53A,54C,55D,56C,57B,58D,59A,60D Tng ... iờm i c la: s = 12.2A +s = 246 ,36 cm Cõu 13 Ta cú: hc 13, 13, 3. 13, = E2 E1 = ( ) = ( 1) 21 hc 13, 13, 5. 13, = E3 E2 = ( ) = ( 2) 32 36 21 = Do ú: Chn ỏp ỏn B 32 27 Cõu 14 Phỏt biu no sau ... = x3 k11 = k22 = k 33 k1 = 15, k2 = 12, k3 = 10 x1 = x2 = x3 = k1i1 = 12 MN = 60 = x1 Gii cõu 23: Chn B = = 50 ( rad s ) Z L1 = Z C1 = 31 Z L = 3Z L1 , Z C = Z C1 Z L1 = ; cos2 = = 3 3 =...