Tswjhwm

Tswjhwm

Txhawm rau muab cov khoom lag luam zoo tshaj plaws rau peb cov neeg siv khoom, peb ua haujlwm tswj hwm kev ua haujlwm zoo rau ob qho tib si ntawm cov khoom lag luam thiab tsis yog cov khoom lag luam.
1. PQC: Txheej Txheem Tswjhwm Zoo thaum tsim khoom
2. IQC: Kev Tswj Xyuas Khoom Zoo tom qab tsim khoom
3. OQC: Kev Tswj Xyuas Kev Ua Haujlwm Zoo ua ntej thauj khoom