Kaw ad

lawv nyiam

Koj tuaj yeem pom txhua yam nthuav dav txog kev nyiam qhov system hauv cov npe hauv qab no. Cov kab lus no muaj feem xyuam nrog lub ntsiab lus nyiam qhov system uas koj tau tshawb nrhiav. Ntawm no koj yuav pom cov lus tseeb thiab nthuav tshaj plaws txog kev nyiam qhov system.

Feem ntau nyeem cov ntawv

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