When Martin Luther King, Jr

question 30

Multiple Choice

When Martin Luther King, Jr., put children on the front lines of protest in Birmingham, Alabama in 1963, the city's police commissioner ______________________.

• A) allowed the march to proceed without incident
• B) called out the Alabama National Guard to prevent the march
• C) used powerful water guns and attack dogs against the protesters
• D) lined the route of the march with Birmingham police to protect the children from violence

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Definitions:

Cascading

The process of connecting or layering several components or systems in a step-wise fashion where the output of one serves as the input for the next.

Reciprocating Functions

Functions or operations that involve back-and-forth or repetitive motion, often seen in mechanical systems.

Parallel Circuit

A circuit in which two or more of the connected components or contact symbols in a ladder program are connected to the same pair of terminals so that current may flow through all the branches; contrasted with a series connection, in which the parts are connected end to end so that current flow has only one path.