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DIRECTION: CHOOSE THE BEST ANSWER. LETTER ONLY. 1. What is the most common tubing used in refrigeration and air-conditioning made of? A. COPPER B. PLASTIC C. WOOD D. GOLD 2. The tubing to be swaged is clamped in? A. BENDING TOOLS B. CUTTING TOOLS C. SWAGING TOOLS D. FLARING TOOLS 3. What kind of tubing is considered strong, highly resistant to corrosion, and easily connec to the fitting by either flaring or brazing? A. STAINLESS STEEL B. COPPER C. ALUMINUM D. FLEXIBLE HOSE 4. What are the hand tools used to tighten and loosen the flare nut fitting? A. ADJUSTABLE WRENCH B. SELF LOCING PLIER C. FLARING TOOL D. PLIER 5. Which of the following tubing is installed in the suction and discharge line of the system order to prevent vibration of the mechanism? A. COPPER TUBE B. PLASTIC C. FLEXIBLE D. STEEL 6. What is the excellent heat source for silver blazing? A. BLOW TORCH B. OXY-ACETYLENE C. ELECTRIC STOVE D. SOLDERING IRON 7. What is the tubing intended for refrigeration and air conditioning installation? A. CLEAN&DRY B. MOISTURIZED D. OILY D. WET 8. What is the process of applying molten metal to heated metals? A. CLAMPING B. RIVETING C. SOLDERING D. SEAMING pasagot po plss kailangan ko na po Kasi Ngayon ung maayos na sagot
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