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
Muscular system
Sagittal section of upper respiratory system illustrating the internal anatomy of the nasal cavity,
Multiple sclerosis (MS). (a) A disease characterized by the gradual development of small areas of ha
Tracheal Tube Respiratory System as diagrammed in a generalized insect
Water consumption by type of use
Stable oxygen isotopes in water