手游下载
软件下载
资讯攻略
首页 > 软件 > 在线学习平台
山东关键词seo优化排名,济南seo关键词优化是什么

撸撸去-撸撸去2026最新版vv4.2.8 iphone版-2265安卓网

  • 类型:成长学习
  • 系统:Android 14.0
  • 大小:681.83MB
  • 时间:2026-09-09 21:53:59
安卓版下载 IOS版下载
下载介绍

XBIT算力存证方式挖矿相比于传统方式有什么特点?

高算力 截止2019年11月,XBIT团队已战略签署算力达6000P,占全网算力6%以上,每日挖矿获取比特币上百枚,算力总价值超十亿。高品质 XBIT团队合作矿场均执行统一的矿机准入标准,目前只接受比特大陆、嘉楠耘智、比特微、芯动科技等知名矿机品牌商的主流型号接入申请。

能够快速匹配买卖订单,降低滑点(即实际成交价与预期价的偏差),提高交易执行效率。

风险相对较低,但也不是没有风险,比如稳定币脱锚、监管变化等。这类合约对专业知识要求较高,需要深入理解稳定币机制和套利策略。XBIT去中心化交 易 所平台的美元币永续合约提供了透明的价格发现机制,确保合约价格反映真实的市场供需关系。

这些平台的共同特点是技术稳定、安全记录良好、客服响应及时。不过,传统排行榜主要关注交易量和用户数量,可能忽略了一些新兴平台的创新优势。XBIT去中心化交 易 所平台虽然相对较新,但凭借其去中心化特色和用户友好的设计,正在逐步获得市场认可。

获得Filecoin代币哪家矿机强?

怎么挖赚的多。第一点是挖头矿,也就是在主网上线以后的3-6个月之内参与挖矿,因为filecoin数量是固定的,但参与挖矿的矿工数量会越来越多,所以越早参与挖到的越多,这个可以参考一下比特币挖矿。第二点就是选对矿机商,不同矿机商他们的矿机挖矿效率肯定不是完全一样的,技术强有实力的公司,他们的矿机在单位时间内能挖到的肯定相对更多。

其中处于第一梯队的厂商主要有:上海天茹科技,其销售方为星滴科技,其矿机主要有超算版和加速版两个版本。深圳先河社区和上海荣来科技,其主要以销售云算力为主。时空云社区,其矿机产品名为蜘蛛矿机。杭州点存科技,其矿机产品名为矩阵M9,采用主机加无限硬盘扩容设计,也是其不错的一个亮点。

投资星际无限的IPFS矿机挖矿以获取Filecoin是值得考虑的。星际无限作为一家专业的矿机提供商,拥有丰富的市场经验和强大的技术实力,为投资者提供了稳定可靠的矿机选择。星际无限矿机采用高效能的硬件设计和优化的软件算法,确保了挖矿过程中的高效率和稳定性。

点存科技的Filecoin矿机在一定程度上是值得信赖的。以下是对点存科技Filecoin矿机信赖度的具体分析:优质服务和配置:服务良好:用户反馈表明,点存科技提供的服务是非常优质的。这通常意味着在购买、部署以及后续维护过程中,用户能够得到及时且专业的支持。

不是骗局,从最新的存储矿池排名来看,最强的是StarPool,对应的公司是头部矿商星际联盟。

Z3矩阵挖矿机是点存科技的挖矿机之一,配置性能都非常的高,并且价格还便宜,身边很多朋友买的都是Z3矩阵,虽然Filecoin还没上线,但是矿机的价格已经翻番了。

Filecoin矿机哪个比较好?

1、其中处于第一梯队的厂商主要有:上海天茹科技,其销售方为星滴科技,其矿机主要有超算版和加速版两个版本。深圳先河社区和上海荣来科技,其主要以销售云算力为主。时空云社区,其矿机产品名为蜘蛛矿机。杭州点存科技,其矿机产品名为矩阵M9,采用主机加无限硬盘扩容设计,也是其不错的一个亮点。Q和V同号,Filecoin矿机和云算力对接。

2、第一点是挖头矿,也就是在主网上线以后的3-6个月之内参与挖矿,因为filecoin数量是固定的,但参与挖矿的矿工数量会越来越多,所以越早参与挖到的越多,这个可以参考一下比特币挖矿。

3、投资星际无限的IPFS矿机挖矿,不仅能够获得可观的收益,还能享受到专业的技术和服务支持。选择星际无限矿机,为Filecoin挖矿之旅增添一份保障。

4、选择满存算力还是矿机需根据资金实力和技术熟悉度决定,资金充足且熟悉IPFS协议者选矿机收益更高,散户或资金有限者选满存算力更稳妥。

5、CPU:算力增长的核心作用:CPU是Filecoin挖矿中算力增长的核心硬件,其性能直接决定存储封装过程的速度。多核、高频CPU能显著加速计算,使矿机更快向网络提交封装结果。

6、Z3矩阵挖矿机是点存科技的挖矿机之一,配置性能都非常的高,并且价格还便宜,身边很多朋友买的都是Z3矩阵,虽然Filecoin还没上线,但是矿机的价格已经翻番了。

相关产品

查看更多

攻略教程

小编推荐

https://sheys10.top:8443/play.php?id=19955

HDxxxtbxxcon

37rt.CC

yw91

45261.cnm

https://16map.com/sitetag/qisaodaohang

url www.1123ap.com/

7k12,com

www.33xx.com

s5dh.c|ub

www.51.T

www.5757nn,com

jhs.hh

Best Gore.fun

85257.cc

www.aag59.comhttps://www.aag59.com/

179916.top

the 1458porn

C j 34 com

98.77cc

77672.con

69cc.cp

wwwcoz xxx91com

53585..com

www.x75e.com

rx988.com

98.77cc

7r89cc

http://44333.yaiupso.cn/

/4.yese1385

530679.com

www.3y7n.com

https://www.1188ee.com/pages/videoplay/index?cid=25565

htps:/658844.com

https://xinc.438746.xyz:8283/video-details/42752?channel=Onerun5-144-dy

https://m.45575.com/app/71124.html

http//666.com

33K77

www.htmtshht.vip.9527

5PW.MY

37rt.CC

www.by65777.com

hjd268C0m

http://c.576.cc/

http://m.bellaperversa.cn/soft/nidqxso/3311.html

by68777

www.337com

http://www.270tt.com/

https://78271.net/

www.ht721op.vip

www.5278b2.com

5wioa6.kkr38.cn

www.cu6.cc

9714c0m

bgvip6688@gmail.com

45261.cnm

https://xyxtv21.top:8443/play.php?id=24744

com.grass.mhapp.ap

414942.com

www.433624

http://www.t777e.c......

https://96ph136.cc/

461dj.com

http://914678.com/

https://xinc.629557.xyz:8283/home

4576.CC

53585..com

8544.cc

895888。com

5PW.MY

kxiaohuangshu@gmsil.com

ZZX01.CC

http://331277.com

167943.cc

4hudizhi167,com

LL1.cC

bgvip6688@gmail.com

qy0802.vip

https://xyxtv21.top:8443/play.php?id=20153

13544,CCm

NCAIBB30

www.92n.C0m

wh9y.js279zg.pro:5288

www.htmtshht.vip.9527

kht.45vip

489155.com

5332.TV

5PW.MY

https://g7.ggtvsp120.top/play.html?id=129011

Sa.7MY

,https://319789.cc

www.171377.com

www94C,C0m

https//ddp30.com

x.cnm

http:/app-8cda02f036kh.appmiaoda.com/#

8544.cc

18ccom

https://m5.m579a039.cc/play.html?id=132367

x8165.cc

https://app.3dmgame.com/android/285493.html

ZZX01.CC

https://www.mtxx216.vip:9527/search/%E6%8E%A5%E5%90%BB/9

1337kpdz

9981.f8g3.com ...

https://www.bmhatnm.com:2087/vod/play/4132.html?v=47994

www,94,C0m

https51cgw78.com

xxcc.qpom

*18comic.ink

485CC.H

42654a.C0m

wwwc17Lcom

9518.y8jv.com

xJSQ6.CC

WWWC0b

http://m.bellaperversa.cn/soft/nidqxso/3061.html

91APP-P8

8816a.ct

1666.panlay

www87,Comt

www、5252BB、C〇m

91att.com

44564.cC

1757.ys2v.com

http://89312.com/

17b6.vip

https://1.pp8235a.cc

504.cOM

2R34CC。

http://247456.com/

http://54689.com/

776777。cc

www.maotu88

k x h s17.vip

hX0242CC

hggy6688

dizhi2048

www.91n91.com

http:/app-8cda02f036kh.appmiaoda.com/#

kxhs85.vip

91n+https://www.jcwslut.com:2096/35.html

8816a.ct

www.51.T

734528.com

4747.com.cn

www.171377.com

www.lloagpx.com

www.12abb.com

https://game.pipigou888.top/

https://16map.com/sitetag/qisaodaohang

ttbf.lanzoup.com

www.171377.com

LL1.cC

9714c0m

le.9dvv.cn

7mhq.cnm

http://c.576.cc/

483737. com

www.by8831.com

http://www.9977tv.com

http://732608.com/

http://247456.com/

https://www.555qqp.com/

www94C,C0m

mg346vip

http://247456.com/

17Cm、CC

http://www.htmtshht100.cc:9527/

https://je-t.965392.xyz:8283/searchList/vod/JUU0JUJBJUJBJUU1JUE2JUJC?cha

www.8xbxb.com

181W.CC

url www.937368.com/

https://2k.kksp237.top/video.html?id=34&title=¤tPage=30

www.453941.com.

7177Tv

vA42cc

https://249176.lol/

www.maotu88

http://331277.com

p1314cC

www84becom

51cgm36.com

6qKds. top

http://www.270tt.com/

www.88OE.com

624hh.com

69435.c0m

url lonli6.net/

9149553.com

98.77cc

*18comic.ink

9178dd.com

xm5:my

www.c7a11.com

2007.tzl.tzav376

www.TX030.c

373k,cc

373k,cc

www.55manshu.come

jj5.my

www.25667

734528.com

22cn44cn

36d.GG.36dCLUB

13544,CCm

http://ha7w.com/

1176.g5pt.com

http://3399.cn/

http://m.fptexpo.cn/5338.html

s03av

http://520423.com/

WWW 91ncom

348.cnm

7s67.CC,

http://www.8858.gov.cn/

8816a.ct

http://www.656xx.com/

94225,com

http://2.XX9339.XX.cn

177b6.vip

http://49712.com

dS345.C0M

2455、TV

https://cechi2.com/vod4783-1-1/

ht23 vip

21246.com

https://yesok79.app

2R34CC。

4127m4.cc:64567

https://hbvwqo.626976.xyz:8283/home?channel=gj-62

22cn44cn

95gan.com

WWW。54M。com

by1537.com

kpdz.78cn

www.dainishe.com

www.91n91.com

www,youzz,com

https://uxqwmysr.top:2549/vod/list.html?type_id=80&page=299

http://255497.com/

www.26uuu.com torrent magnet

http//666.com

hggy6688

porezzz

776777。cc

www.er222

https://xyxtv23.top:8443/play.php?id=3516

4127m4.cc:64567

http://6661.vt6r.com

http://by1856.com/

www.er222

5b7.㏄

988775..com

521314..com

5492Cm

www.hx0011

www.337com

http://188249.com/v5/6195-1-1.html

http://331277.com

1949.xar6.com

jhs2.1.2(2)(5).apk

9149553.com

http://54689.com/

876876.APP

52648.QPON

www992322C0m

www33。n。3cc

2C3K.CC

www.n1v3q.com

7r89cc

W241.c c

https://xjdm489.com

90942.C○m

34kb.㏄

5AB5.Com

32662.C0m

www.7k7k.con

TVTX,CC

https://bbs.c2yf.video/2048/

1949.xar6.com

https://g7.ggtvsp120.top/play.html?id=129011

www.25667

https://337rs.com/

W99B.CC

https://16map.com/sitetag/qisaodaohang

https://www.11gghh.com/pages/videoplay/index?cid=124029

4127m4.cc:64567

/4.yese1385

457KPdZ

https://337rs.com/

http://520423.com/

457KPdZ

3434x。CC

www.666777

2671.tu6a.com

www.5278b2.com

www87,Comt

http://x55.im/

www.d7b8

m82249 co

17590cncncn

http://www.8858.gov.cn/

www.91n91.com

http://989676.com/

7767.xcc

17c21cv

U6UU.CC

27626,com

www36293

http://www.chaozirantool/

k x h s17.vip

0149567.CoM

414942.com

www.by65777.com

XXCC.CN

19X,cC

wh9y.js279zg.pro:5288

hggy6688

5545.TV

https://8q9uu8.com/category/4

www.dainishe.com

781781.COM

www,youzz,com

www.91gao.com

4hudizhi.71com

www.51.T

www.788955.com

895888。com

128Ww.Cc

https://www.f8942.com/

http://44333.yaiupso.cn/

Best Gore.fun

4747.com.cn

http://1919c.com/

W241.c c

http://ha7w.com/

992kp11

download2357.mediafire.com

cc4455.zom

https://47x97b.com/Enter/home.html

7755n、C0m

4hudizhi167,com

155171.Cn

554b.on

www.788135.com

https://game.pipigou888.top/

5885.,VlP

wan55cn/435A

https://shidyv10.top:8443/play.php?id=26037

65956cc

http://1919c.com/

http://www.998282.com

83t9.com

https://xinc.438746.xyz:8283/video-details/42752?channel=Onerun5-144-dy

KTP66.T0P

www.n1v3q.com

www.xjsports.xn

https://www.xhsrt401.vip:2024/videoplay/9735

155171.Cn

https://www.11gghh.com/pages/videoplay/index?cid=124029

2024

www.hx0011

http://www.ssd3.sh.cn

fortunecutle.tv

www.htmtshht.vip.9527

0149567.CoM

https://bbs.c2yf.video/2048/

www.64754.ONE

https://www.f8942.com/

url 432546.com/

555u、my

7AA2.com

jj5.my

0c162a.netlify.app

461dj.com

8544.cc

624hh.com

kdvip09.com

273A,cc

www.d7b8

https://xjdm489.com

rx988.com

www.1886.com

www33。n。3cc

https://2k.kksp237.top/video.html?id=34&title=¤tPage=30

https//ddp30.com

www.mogutv3.cn

www.c7a11.com

jm2025.xz/stra

wwwwww22239

url m.5tcxxs.com/119/119744/

5AB5.Com

http://188505.com

www.1v v5.cc.com

9 y 6 P. C C

hf76cc

3434x。CC

91APP-P8

81792.c

https://d2qbyafr7iw716.cloudfront.net/?dl=8xueqp

U808.c c

65956cc

www.83876.com

www.267tt.com

44974.com.cn

177b6.vip

fortunecutle.tv

https://sheys10.top:8443/play.php?id=19955

https://.b88.com

mogu.3cc

https://www.xuanyuancs.com/book/213526.html

aKht219ViP

91 W.C O M

https://www.bmhatnm.com:2087/vod/play/4132.html?v=47994

https://m.45575.com/app/71124.html

781781.COM

4hudizhi167,com

xxcc.qpom

www,4hudizhi390,com

36444com

xhs7.c

https://thep7050.cc/video/31714

www.8xbxb.com

http://89312.com/

911111.vip

zb.cx98.cn

155171.Cn

bxnx.vip134

461dj.com

kxhs85.vip

83x7CC

the 1458porn

ZZX01.CC

jm2025.xz/stra

937tv.ViP

by68777

485CC.H

xiuxiu360.com~xiuxiu

lanmei.me3

77.44ck

69435.c0m

http://xn--uzw488f.xn--fiqs8s/

www.xjsports.xn

http://89312.com/

*18comic.ink

http://600tk.cc/

73168:com

31xx1934d

http://y6a.cn/s/6r

www.83876.com

128Ww.Cc

www.htmtshht243.cc

lh8d.comaw9

6661.Ke8y.C0m

666yz.cn

kxiaohuangshu@gmsil.com

22cn44cn

www.337com

http://ttrp16.com/

www/91n.com

http://914678.com/

www.selang..com

https://.b88.com

22cn44cn

https://31l8cp.amofcq.com:2096/?channelCode=31

url m.5tcxxs.com/119/119744/

WWW,91RA,CON

https://xinc.438746.xyz:8283/video-details/42752?channel=Onerun5-144-dy

24444cc.

rx988.com

anw6.cc"

2625.hde5.com

542294.vip

3463.cc

loi vip.com

https://337rs.com/

8s28,cc

wwwhanime1.men

www.1886.com

https://www.1188ee.com/pages/videoplay/index?cid=25565

26j3. vip

www.08jjj.com

www.by8831.com

734528.com

http://76610.cc

http://88988.com/

timi4.

https://bbs.c2yf.video/2048/

www.11166.c0m

83t9.com

83t9.com

:t.me/lsj321

52648.QPON

7528.d3y8.com

35.88.12827

www.BoleZJ.999c0m

http://633054.com/

by1537.com

httPs:∥96KPdz.C0m

WWW 91ncom

url www.hjn33.cc:9999/search/%E5%A8%9C%E5%A8%9C/3

www.54999

www.ht721op.vip

https://missav.ai/cn/silk-191

9178/con

ajksfh.434942.xyz

31xx1934d

7kwm.㏄

3w3cC

www.666777

333339..com

ncyy11com

7767.xcc

U6UU.CC

www.maotu88

7AA2.com

E520CC

962218.COM

177b6.vip

https://ju-s.436049.xyz:8283/user/center?channel=Onerun5-175-dy

9714c0m

www.390222com

https kbc.7zbi.co m_i_

m.m.17c.moc

520440.cow

yw91

https://www.mtfgahg.com:8888/vod/detail/120.html

7576.TV

9178/con

https://www.zfpeyus.com:2087/category/8132.html?category_id=5&page=41

miaomi1.vap

www.dainishe.com

Best Gore.fun

5PW.MY

14918/66.com

ZZX01.CC

https://1.se2167hu.cc:8888/?web_id=3599

yeshezy.com

3434x。CC

33y5,ch

https://xjdm489.com

www36293

773nr.top

https://5.xiu7466d.cc:8888

772840..com

www.91n91.com

http://jm18c-tin.org

9852.Tv

https://www.acgpbw.com/

482915,Com

@7yd9

17Cm、CC

https://16map.com/sitetag/qisaodaohang

www.hx0011

8544.cc

xJSQ6.CC

http://188505.com

www.ht604op:vip:9527/

url www.xjw33.cc:1314/

htps:/658844.com

http://www.03079.com/

url www.1123ap.com/

6567.bf5q.com

457KPdZ

1131C,cc

kxhs32.9vip

7755n、C0m

3463.cc

bxnx.vip134

9 y 6 P. C C

http://188505.com

8x8xak.com

http://m.fptexpo.cn/5338.html

W241.c c

958.hsck.com

68ksp.com、69ksp.com,

3362,tv

98687.fun

Sa.7MY

7576.TV

https://japansex-topic.com/zh-tw/porn/%E6%80%A7%E4%BA%A4%E6%80%A7%E6%84%

88n9. cc

httpswww.xhslk240

http://c.576.cc/

2671.tu6a.com

624hh.com

hggy6688

www.4hu.4tv

https://www.gzhgjdc.com/show/18724w03816-418994.html

tiefen.fun

http://app-8cda02f036kn. appmiaoda. com

www.3y7n.com

0149567.CoM

wwwwww22239

www.25667

hsck13.cctv38.com

https://5332.f3b5.com/

http://869.v.top/

https://www.xuanyuancs.com/book/213526.html

167251.xyz

167251.xyz

7.btbxx\1792cc

http://m.bellaperversa.cn/soft/nidqxso/3061.html

,https://319789.cc

187kpdzcnm

666yz.cn

https://t.uvyhz.com/?pid=151

www.487e..com

85257.cc

www.tjmojie.com

www.comxxxcsbkdohebdfz

Cx07.㏄

www.014997com

mogu.3cc

36suv.con

6567.bf5q.com

https://www.xhsrt401.vip:2024/videoplay/9735

http//: 772504. cm

www.5t76H.con

222c.c c

7474.CC

wwwhanime1.men

http://76610.cc

836293cc

33y5,ch

764444,cOm

www.by65777.com

www.12abb.com

www.aqdlt2026net

http://188249.com/v5/6195-1-1.html

https://www.yhtd.cc/

2007.tzl.tzav376

521314..com

47X ,cc

bet360.tiyuwang.org

91 W.C O M

https://t.uvyhz.com/?pid=151

https://xjdm489.com

a.acfan.comxyz.acfan.comn

www.yuojizz.mobli

s34c.con

ttbf.lanzoup.com

7767.xcc

273A,cc

https://www.mtfgahg.com:8888/vod/detail/120.html

www.5757nn,com

http://6.xx6527xx.cc/

www87,Comt

37rt.CC

tvtx.tx

www,youzz,com

3434x。CC

414942.com

d b b h s. co m

url 51cgw37.com/

6661.Ke8y.C0m

qy0802.vip

x.cnm

https://31l8cp.amofcq.com:2096/?channelCode=31

欢乐谷4.huan7414

https://bbs.c2yf.video/2048/

https://sheys10.top:8443/play.php?id=19955

www.comm5151

https.//848226.lol

http://869.v.top/

https://www.234.mn/

0198,C0m,

11ddtV.co m

http://ha7w.com/

http://m.fptexpo.cn/5338.html

xjsp005.com

https://lanzoui.com/b0fqb8kab

17Cm、CC

a.acfan.comxyz.acfan.comn

https://yymh1612.com/

m.m.17c.moc

www7737.con

https://www.mtfgahg.com:8888/vod/detail/120.html

www.cu6.cc

69cc.cp

www.htmtshht.vip.9527

https://lanzoui.com/b0fqb8kab

http://869.v.top/

url 51cgw37.com/

haijiao15.lol

www.tgav101.vip:8701

https://www.gzhgjdc.com/show/18724w03816-418994.html

9714c0m

911111.vip

www.BoleZJ.999c0m

6qqcu、t0P

www.lloagpx.com

338。cC

Best Gore.fun

https://xinc.438746.xyz:8283/video-details/42752?channel=Onerun5-144-dy

http://ha7w.com/

81792.c

www94C,C0m

www,94,C0m

jxx.ccjxx1.top - jxx100.

http://www.656xx.com/

www.788955.com

www/91n.com

958.hsck.com

www.5278b2.com

https://je-t.965392.xyz:8283/searchList/vod/JUU0JUJBJUJBJUU1JUE2JUJC?cha

348.cnm

http://www.270tt.com/

www572929.com

,https://319789.cc

fortunecutle.tv

k k n n .qpon

www.91n91.com

http://m.bellaperversa.cn/soft/nidqxso/3311.html

http://91n.cc

www.ht721op.vip

https://www.kdocs.cn/l/ct6o4sZIMFD2

https://m.45575.com/app/71124.html

4hudizhi.71com

http://893643.com/

0149567.CoM

http://732681.cc/

www.er222

781781.COM

1337kpdz

vA42cc

https://www.555qqp.com/

https://lanzoui.com/b0fqb8kab

www.BoleZJ.999c0m

91Mitao

bet360.tiyuwang.org

https://missav.ai/cn/silk-191

3789.m3pp.com

www.d7b8

6567.bf5q.com

www.177cc.com

http://www.t777e.c......

wh9y.js279zg.pro:5288

9852.Tv

https://www.xhsrt401.vip:2024/videoplay/9735

https://www.234.mn/

https://xinc.438746.xyz:8283/video-details/42752?channel=Onerun5-144-dy

CZ86,CC

https://g7.ggtvsp120.top/play.html?id=129011

tiefen.fun

www.c7a11.com

https://www.xhsrt401.vip:2024/videoplay/9735

www.by8831.com

https//ddp30.com

643gg.com

418214.com

fortunecutle.tv

SX66,CC

wwwqxqxcom

http://www44331.gov.cn/

http://54689.com/

7474.CC

www.177cc.com

http:/app-8cda02f036kh.appmiaoda.com/#

45261.cnm

776777。cc

542294.vip

www.1886.com

www,21888.COm

https:/ /www.akwplzo.com

www.171377.com

www.26uuu.com torrent magnet

wwwc17Lcom

http://taimei2341-f.cc/

857.7cc

83x7CC

www.htmtshht.vip.9527

mogu.3cc

91Mitao

ajksfh.434942.xyz

http://1919c.com/

duoduo220.top

https://pan.quark.cn/s/9d7281dde98d

3362,tv

CP74.toP

98.77cc

https://www.zsqvfmb.com:2087/1035.html91n%E5%85%8D%E8%B4%B9%E5%A4%84%E5%

836293cc

htpps://app.clicli.cc/

911111.vip

21246.com

NCAIBB30

https://s8.sgsp571.top/play.html?id=124699

483737. com

wwwhanime1.men

https://xinc.446679.xyz:8283/home?channel=gj-44

https://2k.kksp237.top/video.html?id=34&title=¤tPage=30