Branch selectors are boxes in heat recovery VRF systems that allow:
A) One refrigerant line to feed a single indoor unit.
B) Multiple refrigerant lines to feed multiple indoor units.
C) One refrigerant line to feed multiple indoor units.
D) Multiple refrigerant lines to feed a single indoor unit.
C
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The first symptom of a lack of oxygen is _____.
a. sweating and nervousness b. shivering c. seizures d. fast breathing and heartbeat
In a Toyota Prius regenerative braking system, how many pressure sensors are used?
A) Two B) Three C) Four D) One
Which of the following statements about battery ratings is true?
A. The ampere-hour rating is defined as the amount of steady current that a fully charged battery can supply for 1 hour at 80°F (26.7°C) without the cell voltage falling below a predetermined voltage. B. The cold cranking amps rating represents the number of amps that a fully charged battery can deliver at 0°F (-17.7°C) for 30 seconds while maintaining a voltage above 9.6 volts for a 12V battery. C. The cranking amp rating expresses the number of amperes a battery can deliver at 32°F (0°C) for 30 seconds and maintain at least 1.2 volts per cell. D. The reserve capacity rating expresses the number of amperes a fully charged battery at 80°F can supply before the battery’s voltage falls below 10.5 volts.
Discuss the physical, chemical, and mechanical properties of PMMA compared to polystyrene
What will be an ideal response?