In Recent Years

question 152

Multiple Choice

In recent years

• A)our current account and capital account were both negative.
• B)our current account and capital account were both positive.
• C)our current account was positive and our capital account was negative.
• D)our current account was negative and our capital account was positive.

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Definitions:

Cross-Linking

The process of connecting or binding two or more polymer chains together through covalent, ionic, or hydrogen bonds, which affects the physical properties of the material.

Structural Isomers

Molecules that share the same molecular formula but have different arrangements of the atoms within the molecule.

Diastereomers

Stereoisomers that are not mirror images of each other; compounds that have multiple stereocenters with at least one differing in configuration.

Nylon 6,6

A type of polyamide or nylon made from hexamethylene diamine and adipic acid, characterized by high strength and melting point.