What are the first symptoms of overwatering?
What will be an ideal response?
Weak growth and lower leaf drop
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Why is water control so important to the effectiveness of a PEM fuel cell?
What will be an ideal response?
If an air-conditioning system is operating with an 80°F return air temperature and a 50°F supply air temperature:
A) The large temperature drop indicates excessive airflow. B) You should be happy the air is so cold. C) The system is operating correctly. D) The large temperature drop indicates the airflow is less than required.
How are future service connections handled when installing heat tracing on domestic water supply systems?
a. A junction box is installed at the end of the pipe. b. A service loop of extra heating cable is provided at connections. c. Additional heating cable is spliced in when additional services are added. d. The existing cable is replaced when new services are added.
You should lift with your back and not your legs.
Answer the following statement true (T) or false (F)