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发表于 2019-9-13 23:46:11 | 显示全部楼层 |阅读模式
?????????2016???????(???)

???2015-2016??????????????

2015-2016??????????????

????????????

??????????????

(???6? ??100? ????80??g?10 N?kg)

????????(??7??????3???21??????????????????????????????????)

1.????????????????,??????????????????? ? ?

2?????????????????????( )

A?????????? B?????????? C??????????? D?? ????????

3???????????????????????????????? ()

A??????????????? B???????????????? C?LED???????? D???????????? 4????????????????? ( ) A???B?????????????

B?????????????????????? C??????????????????????

D???????????????????????????

5????????,?????????????????????????????,?-20??????????????????(?????????????),???????????()

A.?????0?,?????100? B.???????????

C.?????????????????? D.????BC?,???????????

6????????????????????????? ???????????????????U?????? ????????U0??U?U0?????????R???

??????????????????????? ()

7???1??????????????????????V???U????????????????????????????( )

???????????1 (?2?

)

A.????????20cm B.?u=20cm????????? C.?u?10cm??????????????????

D.????15cm???30cm?????????????????

?1

??????(??7?????1?????3???21?)

8. ??2?????????????????????__________???????????????__________??????????????????????__________?????

9. ??3?????????????????????????AB ??????????A?B??B?A"???????????????????AB?????????????????________?????????????????????????????????????????????? ?

10. ????????????????????????????????????????????????? ??????????????????????????????? ??/????????????????????

11???a???????????????????S?????????????????????????????b?????????????_____???????????V2 ?????????????_____V???R1????_____??

12???????????????????????????????????????????????????????????????????___________???????????_________????????????????????????????????????????____________________?????????

13???4???????????????????????????????????20cm??????????????????????????????????????????_______cm???????????????????_______(?????)???????????????10cm???????_______(?????

?5 ?

4

14????????????????????????________(???????)????????????????????________(???????)??????????????????????????????5?????????????????(?????????????)??????????????________(?????)?

???????????2 (?2?

)

?2

??????(??3????7?) 15??1??3??????6????? ?2??2????7????????????????????????????????????????????????????????????????????????????? ?3??2?????8???????????????AB????MN???A?B??

?6 ?7 ?8

??????(??3????22?)

16?(7?) ????????????????????????A?B????????????????????????A?B???

?1???????????????100??????????A?B?????

?2???????????????????????????????????????????C???a?b???????????? ???????D?E??????????????

?3???????C????????????? ? ? ?

17?(7?) ??????????????????????

???????????????????????????5???P??2?????????????__________________________________________? ??????????A????????????????????????????______?????????????????______?????????????_______________?????????????????

???????B?????????????????????????????????????_________???????????????_______????C?D???????????? ?4???????????????????????????????

???????????3 (?2?

)

18. (8?) ????????????????????????????????????a?b?c?d???????????????????????????????5??????????????

? ?

?1???????????????????????????????

??????? ?????

?2??????????????????????????????? ????

?3???????????5?????????? ?4???????????????????????? ???? ? ?5???????,??????U??????????,????????????? ??????(??2????13?)

19?(6?) ????????????????????????????????????????????????????????????????????????????????????????

?1?????2000mAh????????2000mA??????1??????????????????????????????????

?2????????????????????????????10%?????????????????????20????????????????????????????????????????40%????????????

20?(7?) ???????????????????????????????????????????????????????????????

?1?1???????????4.5L???20???????????????????

333

?????????[?????1.010kg/m???????4.210J/?kg???] ?2?????????20min????????3000r/?kW?h???????1400?????????????

?3???????????????

???????????4 (?2?

)

????????(??2????16?) 21?(8?)??????????

Quaranta?????????????????????????????????.???????????????????????????????????.?????????????????????????????.??????????????

2

????S=8m????????U=120V?????????????10A????????

3

???800W?????.??????????1???????????P0=1.010W. ????????????????100m???????5s?

?1?????????? ????????????????????????????????????

?2????Quaranta???????????????????????????????????

m/s? ?4??4?????? ???????????????????????????????

?5??????????????????P???????????????P1??????????????????????20????????????????????????

? N.P1= W.

22?(8?) ?????????????????????????????????R??????????????????????????????????????????????????????????????????????????????????????U1=3V????????????????R0?30?????????????50mA????????????????????????????????????

???????????5 (?2?

)

?????2016?????????


?2016?????????????????
?????http://www.850500.com/news/62048.html
?????,??!
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