Ground-up aluminum can react violently with which of the following?
A) Oxygen B) CFC and HFC C) HFC D) CFC
C
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What is ethylene and why is it important for a plantscaper to understand how it works?
What will be an ideal response?
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Thread forming taps:
A) Cannot be used on a drill press B) Produce no chips C) Push the chips ahead of them D) Produce only small chips
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Air-conditioning tube-and-fin coils are commonly available as:
A) "A" coils, "T" coils, and "O" coils. B) Slab coils, slant coils, "A" coils, and "N" coils. C) Slant coils, "T" coils, and "P" coils. D) "N" coils, "T" coils, and "P" coils.
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Which type of copper tubing has the same dimensions as Type ACR?
a. Type J b. Type K c. Type L d. Type M
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