【摘要】12、已知真空中的光速c=3*108m/s,求光在水(n=)、冕牌玻璃(n=)、火石玻璃(n=)、加拿大樹膠(n=)、金剛石(n=)等介質(zhì)中的光速。解:則當光在水中,n=時,v=*108m/s,當光在冕牌玻璃中,n=時,v=*108m/s,當光在火石玻璃中,n=時,v=*108m/s,
2025-01-07 18:25
【摘要】Unit1PassageAReadandplete4 1Theyshouldbeforplanningandcarryingouttheinancialpoliciesofthepany2Nofinaldecisionhasbeentaken,butitseemslikelythatthetwo
2025-06-27 13:51
【摘要】Unit8MoneymattersListeningtotheworldSharingScriptsF=Finn;W1=Woman1,etc.;M1=Man1,etc.Part1F:Ispendalotoftimeshopping.Ilikebuyingshoesandbooks.Ibuythings
2025-04-04 01:05
【摘要】1.Idon’tthinkthathewouldmitrobbery,muchlesswouldhemitviolentrobbery.,更不用說暴力搶劫了.2.Menearntendollarsanhouronaverage,whereaswomenonlysevendollars.,而女工才每小時7美元.3.Once
2025-06-28 04:25
【摘要】Keytolesson1Comprehensionofthetext.1.1)T2)F3)T4)F5)T6)F7)T8)T2.1)D2)B3)D4)D5)B6)D3.1)他安靜,性情溫和,時常心不在焉,對待金錢像個孩子。2)連Theo也不得
2025-01-09 16:40
【摘要】AnswerstowrittenexercisesLesson4B1No.Itisn'tmypen.It'syourpen.2No.Itisn'tmypencil.It'syourpencil.3No.Itisn'tmybook.It'syourbook.4No.I
2025-06-24 17:50