14. Kev sib tsoo ntawm ob lub taub hau laser lossis lub taub hau laser tsis tuaj yeem txav mus rau ib qho kev taw qhia?

Vim li cas 1: Kev txav mus deb ntawm lub taub hau laser tawm ntawm qhov chaw teeb tsa.

Kev daws teeb meem: Kev kho qhov keeb kwm.

Vim li cas 2: Lub hauv paus chiv keeb tsis teeb tsa lub luag haujlwm kom txav lub taub hau laser tawm ntawm qhov chaw teeb tsa.

Kev daws teeb meem: Pib dua thiab kho qhov keeb kwm.

Yog vim li cas 3: Teeb meem hloov keeb kwm.

Kev daws teeb meem: Kuaj thiab kho qhov hloov pauv keeb kwm.