2017中考物理选择题专项训练

113500NG40NAFA270NB360NC540ND720N2ABF=10NABA.30N30N;B.30N20N;C.20N20N;D.20N30N.3ABCD414003kg/m3=7.9103kg/m3160A.B.C.D.5Fp6A.B.c.D.7()8ABCD92:132A.FF=6:1B.FF=2:1C.FF=2:3D.FF=1:21011ABCD12121A.B.C.D.13ABCD14ABCD15ABCD16ABCD17C9A.MB.NC.PD.18ABCD19ABCD20()ABCD211200,,,5,(v340)3A1025,175B600,600C1000,200D850,35022ABABAPPBPPCPPD236:24()ABCD25A.B.C.D.26A?B??C??/D?270.5kg0.2kg(g10N/kg)A.5NB.0.5NC.2ND.0.2N28:A.;B.;C.;D..2930A8B4C2D0.5316V3WLRL6V2W()A.2WB.2WC.2WD.322()A.B.C.D.433abA.abB.abC.abD.ab348ABCD35SV13.8VV26VL1A2.2V6VB3.8V6VC2.2V3.8VD6V2.2V36S1LS2M37ABBCD38SL1L2()AL1BL2CDL239KL1L2VlV2()(A)L1(B)Ll(C)L2(D)L2