What was the first successful breath test device and what did it measure to determine blood-alcohol concentration? What is the main difference between this device and the breath test device currently in use?

One of the great societal changes brought about by industrialization in europe was a. slavery. b. urbanization. c. ruralization. d. democracy.

Give an example to prove that your society is developed more than it was before 10 years ?

The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases.protect researchers from disclosing conflicts of interest.prevent subjects from knowing the purpose of a study.protect identifiable research information from compelled disclosure.