The standby time for operation of an alarm system on secondary power in a household system must be no less than _____.
a. 10 hours
b. 12 hours
c. 24 hours
d. 60 hours
c. 24 hours
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What is the difference between an oscillator and a pulse generator?
What will be an ideal response?
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A shell and tube heat exchanger can be used to heat and cool a substance.
a. true b. false
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Hagenbeck designed his zoo to look as if predator and prey were in the same exhibit by using _____
a. electric fencing b. moats c. iron cages d. distractive landscaping
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Which of the following is NOT one of the three steps for safely exiting a cab?
A. climb out of the cab backwards B. let go of the inside door handle C. maintain three points of contact at all times D. never jump out of the cab
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