Guard boards and toe boards are needed when scaffolding is more than _____ feet high.
a. four
b. five
c. six
d. seven
c. six
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What is the vertical distance between the centerline of a pump and the surface of the liquid on the discharge side of the pump?
A. Head B. Total head C. Discharge static head D. Suction static head
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A diaphragm is unique to mammals. What is its function?
What will be an ideal response?
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Which of the following is a measure of the capacitor's ability to store charge in its plates?
A. Transient state B. Permittivity C. Capacitance D. Steady state
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Which of the following does NOT directly determine whether a signal will arrive and make sense to its recipient when your voice travels through the air?
A) loudness of the signal B) distance between the sender and receiver C) time of day D) variations in frequencies
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