Mosquitoes feed off warm-blooded animals to obtain which of the following?
a. proteins c. minerals
b. carbohydrates d. vitamins
A
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The subsequent problems deal with the circuit below where all voltage sources are dc and the circuit is assumed to be in steady state. Also, R1 = R2 = R3 = R4 = R.
The power added to the circuit by source V3 is
A. ?I3 / V3 B. I3 / V3 C. ?I3V3 D. I3V3 E. 0
When referring to evaporators, the terms "direct expansion" and "dry type" can be used interchangeably.
Answer the following statement true (T) or false (F)
Primary disadvantages of room air conditioners include:
A) They block part of the window area and produce operating noise. B) They are only available in limited quantities. C) Difficult installation requiring high levels of training. D) They are more expensive than central systems.
It is ____ to install two or more expansion tanks at different locations within a system.
a. standard procedure b. a manufacturer’s recommendation c. not advisable d. the user’s requirement