Cooking Fat Saved by Housewives During the Second World War________________

question 29

Multiple Choice

Cooking fat saved by housewives during the Second World War________________.

• A) was used by the food industry in making ready-to-eat meals for soldiers
• B) was processed to produce glycerin, which was used in making black powder for bullets
• C) was used at military hospitals
• D) was used to make fuel for military vehicles

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Definitions:

PID

Stands for Proportional-Integral-Derivative, a type of control system used in industrial control applications to regulate temperature, flow, pressure, speed, and other process variables.

Foreign Key

A field in a database table that creates a link between two tables, identifying a row in another table to establish a relationship.

Primary Key

A unique identifier for each record in a database, used to ensure that each row represents a unique instance of the entity modeled by the table.

Secondary Key

A database attribute used for sorting and/or indexing data, which is not the primary key.