[Tuyệt Ä‘áÂÂ] [Chào con ba máÃâ€] [Cùng Con Trưá»ÃÃ] [) ��11.8.24;e] [According to ASHRAE Guideline 3-1996, if the pressure in a system rises from 1 mm Hg to a level above during a standing vacuum test, the system should be checked for leaks.] [Trần quốc lá»™c] [êµÂÂ립중앙박ë%EF] [láºÂÂÂÂp trÃÃâ€] [Vở bà i táºp toán nâng cao lá»›p 3 táºp 1] [guts ��֧�֧ӧ��]