The main function of distribution storage in a water supply system is
a. provision of reserve supplies for emergencies
b. reduction of required pipe sizes and capacities
c. to meet hourly variations in water demand
d. to stabilize pressures in the water distribution system
e. all of the above
Question 2
A check valve is commonly used for
a. tight shutoff of flow in a water main
b. throttling the flow in a water main
c. controlling the flow of wastewater in a gravity sewer
d. protection of maintenance workers in drop manholes
e. prevention of backflow in pump discharge piping after shut off
Diagram of an endomembrane system
Salt water lake
Endocrine System
Effects of the Autonomic Nervous System
Ocean water is layered from top to bottom
Location of the main structures of the vessels