__________, a material that is applied to the male portion of a joint prior to soldering, reduces the amount of oxidation on the joint and helps remove dirt or other particulate matter from the joint while soldering.
A. ACR
B. flux
C. mastic
D. PVC
Answer: B
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Una escalera recta se debe usar en suelo estable y nivelado, a menos que:
a. la escalera venga equipada con bases antideslizantes especiales. b. esté asegurada en la parte superior y en la parte inferior para evitar que se mueva. c. haya alguien al pie de la escalera que la sostenga. d. haya alguien que sostenga la escalera desde arriba.
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How should a ram for breeding be selected?
What will be an ideal response?
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Why is it necessary for dairy cattle to have adequate water in their rations?
What will be an ideal response?
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What is the minimum number of parties required to form a contract?
a. one c. three b. two d. it varies by company
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