UL 181A-P/B-FX Listed and printed, AF 099 delivers full system closure by forming airtight bonds on joints and seams in temperatures ranging from -20 F to 260 F and in humid conditions.Where To Buy Data Sheet Features & Applications UL 181A-P/B-FX listed and printed aluminum foil ...
This tape meets UL181A-P and UL181B-FX Listed and ULC S102 Classified (Flame/Smoke 0/0) specifications. Aluminum Foil Tape 1581A provides the reliable hold you need during sealing and masking applications. Application:The metal backing on foil tape reflects light and heat, and it resist...
163,47,22,-19,79,( ) A. -256 B. -115 C. 181 D. 223答案A解析数列无明显特征,且起伏明显,考虑递推数列。圈三数,找规律,计算发现47-22×3=-19,即第一项-第二项×3=第三项,经验证,163-47×3=22,22-(-19)×3=79,均满足此规律,则所求项为-19-7...