1、4 a Lid *A. %4kW&%S% GaN B. F&4kYE&+S#$!J%T C. DZ?WB8b*M+&TE D. BZ%W#NTBS% 69.728 18. Tgg&tE%Em%3g3%g6$iEaF% 19. cc7kf&56, c c & W c c & e #%$f &WJZkf %, TggIJM%$%,&N&SjFn W&%W%iEiE%WG A. 443J: %+A8&% %&% B. *fE!X: , %&6B!i!+&-Z%* B, #%4k%.M.75;.? c. HElB: %e&%m*HBe#% +SDZF,8%Wjn D. %&a: &, K&%GjFrJ
2、T%k% +S%#3%4k%S#N%3Z, fi%3t4kGO 20. %X & &%$T%rtfl, %i)EJ%4k2%t2t!kTEE: Ni+21=NiC12+2f NO+HCI=NC+HO Ni02+4HI=ilz+C12f +2H20 Tgi%$iE%gg A. NiC12 +%, %Z%JEBLL% 59 : 71 B. EaETZ%#E C. %i?t%4kt&%2&B%E& D. EEOOrfi Ni W4k&2t&?34k 21. $lH%J%l&m, %it74Ti%+3%: %a 3%: c u + cuo CuS04 El kt h b !b ibJ Fe /g cuo E /e CU(OH)I /e 0 0 0 0 0 BblE&/g %SkHtS*BtJfif tg IWJhnin A. %Z%-%-&J 6O4CB%Q%SS?A B. %l6J# Eb%jf.n#flEf&%t%&q, %3ljJUA3f CuO a Cu(OH)2 b!d# C. %Zl6J-aWJ%k%a%kWJ?%, g%&AsBW.$tSk D. %l6J#HHES%W%, %f)-J;IJllUASt%a%
