2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Platinum, kub, nyiaj thiab tooj liab tuaj yeem tshwm sim thiab tsis tas yuav muab rho tawm. Lub reactivity ntawm ib tug hlau txiav txim seb nws yog muab rho tawm. Cov hlau feem ntau pom ua ke nrog cov pa oxygen ua oxides. Yuav kom tau txais cov hlau, cov pa oxygen yuav tsum raug tshem tawm.
Puas platinum rho tawm?
Platinum tseem yog mined li ore. Platinum ores xws li sperrylite thiab cooperite yuav raug mined thaum lawv pom nyob rau hauv kom muaj nuj nqis uas ua rau extraction economically ua tau. Hauv lwm qhov xwm txheej, platinum tau txais los ntawm cov khoom lag luam thaum ores ntawm lwm cov hlau, xws li tooj liab thiab npib tsib xee, ua kom zoo dua.
Puas platinum nyuaj rau kuv?
Platinum uas tau raug mined yog li 30 npaug ntau dua li kub, yog li muab rho tawm platinum. Nws yeej zoo ib yam li cov kub uas pom nyob rau hauv lub ntiaj teb crust, tab sis cov deposits nyuaj dua nrhiav thiab peb tau ua tsis tau zoo ntawm kev rho tawm yav dhau los. … Qhov no yog ib tug loj tshaj platinum miners nyob rau hauv lub ntiaj teb no.
Puas platinum mining phem rau ib puag ncig?
Cov kev cuam tshuam ib puag ncig suav nrog khib nyiab pob zeb thiab tailings tsim tawm (kwv yees li 98% ntawm cov ore ua tailings), kev siv hluav taws xob siab (nruab nrab 175 GJ / kg PGM), kev siv dej (nruab nrab 400 m 3 / kg PGM) thiab CO 2 e emissions (nruab nrab 40 t CO2_e / kg PGM) (Glaister thiab Mudd, 2010). …
Koj nyob qhov twg kuv platinum?
Platinum muaj nyob rau hauv nyias sulfide txheej hauv qee yammafic igneous lub cev thiab yog mined nyob rau hauv Canada, Russia, South Africa, lub tebchaws United States, Zimbabwe thiab Australia. Qee cov platinum tau txais los ntawm cov khoom siv tooj liab thiab npib tsib xee.
Pom zoo:
Puas rho tawm lossis rho tawm?
verbpast tense withdrew, past participle withdrawn. 1 Nrog cov khoom Tshem tawm lossis tshem tawm (ib yam dab tsi) ntawm ib qho chaw lossis txoj haujlwm. 'Nws nres thaum nws mus txog txoj haujlwm raug thiab thim tawm me me ntawm cov kua dej ntshiab.
Yuav tsum ua laj kab ncej yuav tsum tau muab tso rau hauv pob zeb?
Setting laj kab ncej hauv pob zeb Kub yog cov khoom siv ruaj ntseg tshaj plaws rau teeb tsa laj kab, tshwj xeeb tshaj yog tias koj muaj cov av xuab zeb. Pob zeb tej zaum yuav zoo nrog ntom, av nplaum-hnyav av, tab sis nyob rau hauv cov av looser, pob zeb yog tib yam uas yuav ua rau koj cov laj kab ncej daig nyob rau hauv qhov chaw.
Koj puas tuaj yeem rov qhib daim npav rho nyiaj rho tawm?
Feem ntau, daim npav rho nyiaj rho tawm yuav tsis tsim nyog rov qhib dua. Nws tuaj yeem ua rau muaj kev txhawj xeeb txog kev nyab xeeb rau koj cov nyiaj los qhib daim npav uas tau muab tso tseg yav dhau los. Daim npav rho tawm puas tuaj yeem rov qhib tau?
Yuav tsum ua siab zoo yuav raug rho tawm?
Raws li GAAP ("phau ntawv") kev suav nyiaj, zoo siab tsis yog amortized tab sis theej sim txhua xyoo rau kev puas tsuaj tsis hais seb qhov kev yuav los yog khoom vaj khoom tsev / 338 lossis muag khoom. Yuav tsum ua siab zoo Amortised?
Yuav tsum muab cov hniav rho tawm thaum muaj kab mob?
Cov kab mob hniav yuav tsum tau rho tawm sai li sai tauthiab cov txheej txheem yuav tsum tsis txhob ncua los ntawm kev muab tshuaj tua kab mob rau qhov mob los yog tswj kev kis kab mob. Kev rho tawm tam sim no tiv thaiv kev kis kab mob hnyav dua thiab siv tshuaj tua kab mob tsis tsim nyog.
