Engine_2014 : Electricity - 21/2299
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| A container unit's microprocessor-controlled temperature controller is set at -28.9 ° C, appropriate for a frozen cargo of ice cream. In this mode of operation, according to the illustrated temperature controller functional diagrams, what features are locked out? |
| A) modulating cooling only |
| B) heating only |
| C) modulating cooling and heating |
| D) air circulation only |
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