In What Year Did the American Gas Association Publish the First

question 5

Multiple Choice

In what year did the American Gas Association publish the first edition of its requirements for house piping and appliance installation?

• A)1928
• B)1925
• C)1931
• D)1913

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Definitions:

Placebo

An inert or innocuous substance typically used as a control in clinical trials to test the efficacy of treatments.

Experimental Drug

A pharmaceutical compound that is in the process of being tested in preclinical or clinical trials to assess its safety and efficacy.

Full Dose

The complete amount of a medication or vaccine that is prescribed to achieve its intended effect.

Placebo

An inert or non-effective substance given to a control group in experiments to compare its effect with that of an actual drug.