What are hormones and what do they do?
What will be an ideal response?
Hormones are chemical agents, secreted by glands, that are sent to specific areas of the animal's body and produce the effects of stimulating or inhibiting responses. Hormones control vital bodily functions such as growth and reproduction.
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For safety, materials deliveries and crane availability should be scheduled with the _____.
a. supervising engineer b. general contractor c. architect's representative d. site safety officer
How does the receiver ensure that only 100% liquid refrigerant enters the liquid line?
A. By means of a dip tube B. It only allows refrigerant to enter the liquid line when it is filled with liquid. C. The spring loaded relief valve opens. D. None of the above are correct.
Technician A says that an air transformer is a device used to regulate air pressure. Technician B says that an air extractor is used to oil the air lines. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
When moisture is present in a refrigeration system, it will react with the refrigerant and the oil to form ____.
A. carbon dioxide B. acid C. carbon monoxide D. all of the above