How long should a static stretch be held before trying to increase the stretch further?

An early sign of hyperkalemia is:

A) flat T waves on an ECG. B) widening of the QT interval. C) presence of an Osborn wave. D) tall, peaked T waves on an ECG.

Items that provide goods and services for strong national defense and thriving economy, as well as the reliability, robustness, and resiliency that creates a sense of confidence are known as

A. key assets. B. national icons. C. critical infrastructures. D. irreplaceable assets.