One Drawback of Using Custom Made, Pre-Fabricated Duct Sections Is

question 15

Multiple Choice

One drawback of using custom made, pre-fabricated duct sections is that ____.

• A) if the measuring was not done correctly, the job may not go together
• B) altering a duct section at the job site results in lost time
• C) altering a duct section at the job site is extremely cost-ineffective
• D) All of the above.

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Definitions:

Incising

Incising is the process by which a river or stream cuts down into its bed, deepening the channel through the erosion of sediment and rock.

Delta

A landform created by the deposition of sediment carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water.

River Terraces

Flat, bench-like surfaces adjacent to the course of a river, which indicate previous river levels and can be used to reconstruct past environmental changes.

River Terraces

Stepped, flat surfaces alongside river valleys that represent previous levels of the river bed, formed by river erosion and changes in water level.