Dab tsi yog qhov teeb meem uas lub relay tseem flashing tom qab hydraulic tuag txiav tshuab pib?
1. Lub relay yog xoob, ua rau kev sib cuag tsis zoo;
2. Lub relay tau hlawv tawm, ua rau nws tsis tuaj yeem siv hluav taws xob;
3. Lub ascent qhov siab yog teem tsawg dhau;
4. Teem lub thaiv hlau kom qis dua qhov hloov pauv hauv qab;
Yog tias cov txheej txheem saum toj no tsis daws qhov txhaum, thov hu rau Honggang cov neeg ua haujlwm tom qab muag hauv lub sijhawm.