CFCs can exist in the atmosphere for more than ____ years.
A. 20
B. 30
C. 50
D. 60
Answer: C
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Describe how the processor files, which are created when a PLC program is written, are classified.
What will be an ideal response?
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The ____________________ is a device that creates a magnetic field when energized and causes some action to an electric component such as a relay or valve.
Fill in the blank(s) with the appropriate word(s).
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The messages encoded in the DNA are transferred to the rest of the cell by means of a messenger substance known as:
a. GNA c. RNA b. YNA d. BNA
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Competition has never been an important issue for organizations.