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Opium During the Late Eighteenth and Early Nineteenth Century Was

question 213

Multiple Choice

Opium during the late eighteenth and early nineteenth century was brought into China chiefly by __________.


Definitions:

Urine Sample

A sample of urine collected for medical testing to evaluate and diagnose health conditions.

Refractometer

An optical instrument that measures the refraction, or bending, of light as it passes through a liquid.

Specific Gravity

The ratio of the density of a substance to the density of a reference substance; commonly used in various scientific fields to characterize the physical properties of fluids.

Specimen

A sample of tissue, blood, urine, or other material from the body used for analysis and diagnosis.

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