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1-74. Which of the following alloys will melt
directly into a liquid and have no plastic
or semiliquid state?
1. Metallic alloy
2. Eutectic alloy
3. Zinc-lead alloy
4. Copper-zinc alloy
1-75. The PREFERRED solder alloy ratio for
electronic repair is 63/37. Which of the
following alloy ratios is also
ACCEPTABLE for this type of repair?
1. 30/70
2. 50/50
3. 60/40
4.
70/30
