Yuav ua li cas ntxuav cov pwm rulution khob daim npog
Pwm ntawm rwb thaiv tsev khob rooj npog yog qee yam uas muaj kev ntxhua khaub ncaws thiab ntxuav, peb tuaj yeem qhuav nws ntawm lub sam thiaj {{2
Yuav ua li cas kom tshem tawm cov pwm stains ntawm cov thermos khob npog
Cov pwm pob rau ntawm cov khob thermos no feem ntau tshwm sim los ntawm tsis ziab lub khob thermos npog hauv qhov no, tom qab ntawd ntxuav nws nrog xab npum thiab tshiav nyob rau hauv lub hnub {}}
Yuav ua li cas ntxuav cov qias neeg thermos khob npog
Tam sim no, ntau cov thermos khob ntawm kev ua lag luam tuaj nrog lub khob npog {}}}}} Koj puas tuaj yeem ntxiv qee qhov qab zib los yog dej qab zib los ntxuav nws .
