Information systems may
a. be formal
b. be informal
c. use computers
d. All of these are correct.
e. None of these are correct.
D
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Answer the following statements true (T) or false (F)
1) The elements required to start and sustain a fire in the flaming mode are heat, an oxidizing agent, a reducing agent, and a chemical chain reaction. 2) Fire is an exothermic chemical reaction. 3) By-products of combustion are ash and steam. 4) A red, blue, yellow, and white diamond is used to identify hazards present when a substance burns. 5) Heat always travels from a lower temperature to a higher one.
If the application requires a coil design to operate below freezing, there must be provision for ____.
A. flooding the evaporator B. adding refrigerant C. defrost D. suction pressure control
The ____________________ that connect the symbols in a flowchart represent the direction in which the program flows.
Fill in the blank(s) with the appropriate word(s).
The on-off time of a switching regualtor is controlled by
A) an RL circuit B) an RC circuit C) feedback D) a control transistor