What type of certificate authenticates the identity of the user?

a. Digital.
b. Biometric.
c. Encryption.
d. E-mail signing.


Answer: a. Digital.

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What type of starter motor has electrical connections that allow current to pass through the field coils and the armature?

What will be an ideal response?

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Why is integrated pest management better than traditional techniques that used pesticide sprays preventatively?

What will be an ideal response?

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Solenoid valves are used as a pilot valve to control the flow ________

A) Into a remotely operated switch B) At a steady rate C) To a pneumatic-actuated valve D) Through the large-diameter pipe

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How are the indoor sections of mini-split heat pump systems normally installed?

A) The indoor section is installed in an attic or basement and ducted to the conditioned space. B) They are mounted in a window with the refrigerant lines running out the back. C) A large hole must be cut in an outside wall and extra framing added to support the unit. D) They are mounted on the ceiling or hung on a wall.

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