Examlex
RF transmits a _______________ signal which can change based on the signal's voltage and direction.
Exchange
In sociology, it refers to the act of trading goods, services, or favors between individuals or groups, often aiming for mutual benefit.
Economic Activity
Any actions that involve the production, distribution, and consumption of goods and services.
Sectors
Distinct parts of an economy or society, such as the public, private, and voluntary sectors, each with its specific characteristics and functions.
Tertiary
Referring to the third level or stage, often used in education (tertiary education) and economic sectors (tertiary sector or services sector).
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