1. Kev tshuaj xyuas thiab kev saib xyuas cov kauj ruam ntawm gearing. 1) Txheeb xyuas qhov nruj thiab kev siv ntawm txoj siv tsav, thiab kho nws qhov nro. 2) Txheeb xyuas qhov xwm txheej ntawm txhua qhov kis tau tus mob thiab tag nrho cov khoom siv txav mus los, xws li lub zog, cov hlua, cov cams, cov cab cab, cov cab, thiab cov pins thiab cov yuam sij. 3) Kos tag nrho cov joysticks rau mak...
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