When the high flood level of the drain is sufficiently below the bed o – McqOptions

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1.	When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________?
A.	Aqueduct
B.	Syphon-aqueduct
C.	Cross-Drainage
D.	Non-gravity structure
Answer» B. Syphon-aqueduct

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