Hypotheses Described in the Text, and That Have Been Proposed

question 181

Multiple Choice

Hypotheses described in the text, and that have been proposed to explain the rising wage gap between skilled and unskilled workers:

• A)may be reasonable explanations for a country whose technology and participation in world markets have remained constant over the relevant time period
• B)may be complementary to one another
• C)must be mutually exclusive
• D)are, in fact, the only possible explanations for the observed wage gap

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Definitions:

Electromechanical

Pertaining to systems or devices combining electrical and mechanical components.

PLC Retentive Timer

A type of timer in a Programmable Logic Controller (PLC) that retains its value even after a power loss or when the PLC goes into a stop mode.

Motor(s) Operating

Refers to the condition where one or more electric motors are in the process of working or running.

Switch Closed

A condition in an electrical circuit where the switch is in a position that allows current to flow through.