1700993290
1700993291
1700993292
7-11
1700993293
1700993294
1700993295
7-12
1700993296
1700993297
1700993298
7-13
1700993299
1700993300
1700993301
7-14
1700993302
1700993303
1700993304
7-15
1700993305
1700993306
7-16 没有输赢．
1700993307
1700993308
1700993309
7-17
1700993310
1700993311
1700993312
7-18
1700993313
1700993314
7-19 0.087g＞a＝Lg2／4π2n2l，n＝1，2，…．
1700993315
1700993316
7-20 T＝0.77s．
1700993317
1700993318
1700993319
7-21
1700993320
1700993321
1700993322
7-22
1700993323
1700993324
1700993325
7-23
1700993326
1700993327
1700993328
7-24
1700993329
1700993330
1700993331
7-25
1700993332
1700993333
7-26 A1＝x0，A2＝βx0＋v0．
1700993334
1700993335
7-27 β＝9.0/s，y＝（-0.1＋1.71t）e-9.0tm．
1700993336
1700993337
1700993338
7-28
1700993339