R 134a refrigerant must be reclaimed to meet which of these purity standards?
A) J2788
B) DOT-4BA
C) J1991
D) J2099
Answer : D) J2099
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A good circulating-type heater is only about one-third as efficient as a working fireplace.
Answer the following statement true (T) or false (F)
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What hazard is any danger or risk that comes from a living, or once living, organism such as viruses, mosquitoes, or snakes that can cause a health problem?
A) Chemical hazard B) Biological hazard C) Security hazard D) Physical hazard
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Gerbils are also known as ____________________ rats
Fill in the blank(s) with correct word
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Given the source-free circuit in Fig. 8.114, use PSpice to get i(t) for 0 < t < 20 s. Take v(0) = 30 V and i(0) = 2 A.
 FIGURE 1.png)
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