Tus nqi skydiving yog dab tsi?

Cov txheej txheem:

Tus nqi skydiving yog dab tsi?
Tus nqi skydiving yog dab tsi?
Anonim

Nyob rau xyoo 2020, USPA tau sau tseg 11 qhov xwm txheej skydiving tuag, tus nqi ntawm 0.39 tus neeg tuag rau 100,000 dhia. Qhov no yog piv rau 2019, qhov twg cov neeg koom ua ntau dhia-3.3 lab-thiab USPA tau sau tseg 15 tus neeg tuag, tus nqi ntawm 0.45 rau 100,000.

Dab tsi yog qhov txawv ntawm kev tuag ntawm skydiving?

Kev txheeb cais qhia tias muaj ib tus tub ntxhais kawm tandem skydiving tuag rau txhua 500,000 tandem dhia uas ua rau muaj qhov sib txawv ntawm kev tuag. 000002%! Raws li Pawg Saib Xyuas Kev Nyab Xeeb Hauv Tebchaws, ib tus neeg muaj feem yuav tuag los ntawm xob laim lossis raug muv stung.

Muaj pes tsawg tus neeg tuag los ntawm skydiving?

Results. Ntawm qhov yuav luag 6.2 lab dhia ua tau los ntawm 519, 620 skydivers tshaj 10 xyoo ntawm 2010 thiab 2019,35 tus neeg tuagthiab 3015 raug mob, sib raug rau 0.57 tus neeg tuag (95% CI 0.38 rau 0.7) thiab 49 qhov raug mob (95% CI 47.0 txog 50.1) rau 100, 000 dhia.

Yuav muaj pes tsawg tus neeg tuag ib xyoos twg los ntawm kev dhia saum ntuj?

At 19 ib xyoos, kev sib tsoo skydiving tsis tshua muaj tshwm sim. Qhov ntawd nyiam ua rau txhua tus xov xwm tsim nyog, yog li koj yuav hnov txog lawv. Ntawm qhov tod tes, muaj txog 93 tus neeg tuag tsheb sib tsoo txhua hnub hauv Tebchaws Meskas.

Puas skydiving puas tsim nyog?

Skydiving muaj feem cuam tshuam. Koj tuaj yeem raug mob hnyav lossis tua skydiving, tab sis zoo li txhua yam, theem ntawm kev pheej hmoo tuaj yeem tswj hwm hauv kab lis kev cai thiab tsom mus raukev nyab xeeb. Raws li USPA, muaj 0.0007% txoj hauv kev ntawm kev tuag thaum caij ntuj nag, uas ua rau nws muaj kev pheej hmoo tsawg dua kev tsav tsheb.

Pom zoo:

Nthuav cov khoom
Puas talcum hmoov yaj hauv dej?
Nyeem ntxiv

Puas talcum hmoov yaj hauv dej?

Talc yog xyaum insoluble hauv dej, dilute ntxhia acids, thiab dilute daws ntawm alkali halides thiab alkaline hydroxides. Nws yog soluble hauv kub concentrated phosphoric acid. Vim li cas talcum hmoov tsis yaj hauv dej? Tsim Hauv Tsev.

Vim li cas thiaj siv schlieren photography?
Nyeem ntxiv

Vim li cas thiaj siv schlieren photography?

Schlieren kev yees duab yog txheej txheem pom kev uas yog siv los yees duab cov dej ntws ntawm qhov sib txawv. Tsim los ntawm German physicist lub yim hli ntuj Toepler nyob rau hauv 1864 los kawm supersonic motion, nws yog dav siv nyob rau hauv aeronautical engineering los yees duab cov ntws ntawm huab cua nyob ib ncig ntawm cov khoom.

Yuav rov hais dua email li cas?
Nyeem ntxiv

Yuav rov hais dua email li cas?

Koj tuaj yeem sim: "Kuv tab tom ua raws li hauv qab no" lossis "Ua raws li qhov no [thov / nug / haujlwm]" "Kuv rov qab rau hauv qab no" lossis "Circling rov qab rau ntawm no [thov / nug / assignment]