AxA,N一、选择题:1.3001:C;2.3002:B;3.3007:B;4.3396:C;5.3552:D;6.5178:E;7.5179:B;8.5312:B;9.5501:B;10.5502:B;11.3030:B;12.3042:B;13.3254:D;14.3270:B;15.5186:C;16.3023:C;17.3028:D;18.3393:B;19.3560:D;20.5182:D;21.5504:D;22.5505:C;23.3008:C;24.3562:B;二、填空题:1.3009:π ;- π/2;π/ 312/5cos(102π−×=t2.3390:212cos(π+πT1cos(1037.0π±π×=t)2−x3.3557:2T;3)12cos(π−πt)AtA4.3816:0.37cm;25.3817:0.05m;-0.205π(或-36.9°)6.3818:π32π±)2−x 7.3819:8.3820:1.55Hz;0.103m9.3033:10cm(π/6)rad/s;π/310.3041:0;3πcm/s)4/cos(102π+π×=t(SI)12.3398:3.43s;-2π/312π+π×=(SI)14cos(04.0π−πt11.3046:π/4;2−x13.3399:)cos(106π+π×=t(SI);23−a)cos(106tx13−bx14.3567:2)15.3029...