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If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
The design discharge for the separate sewer system shall be taken as
The design discharge for the combined sewer system shall be taken as
The sewer which received discharge from two or more main sewers, is known as
A sewer that receives the discharge of a number of house sewers is called
The sewer which transports the sewage to the point of treatment, is called
The sewer that unloads the sewage at the point of treatment is called
The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
One who collects postage stamps -