The most commonly used inventory valuation methods under a perpetual system are: 1  first-in first-out (FIFO) 2  last-in first-out (LIFO) 3  highest in,first out (HIFO) 4  average cost or weighted average cost.
More Information About Eyebrow lump. List of 6 causes of Eyebrow lump. This section shows a full list of all the diseases and conditions listed as a possible cause of Eyebrow lump in our database from various sources. 1  Acne vulgaris. 2  Dermoid cyst. 3  Folliculitis.  Malignant melanoma.
What Causes Muscle Knots In Your Upper Back. A âknotâ is a contraction (shortening) or spasm in a muscle. It is a place where a muscle has become âtightâ for one reason or another. Overwork is the most common cause. That doesnât mean that YOU are working too muchâit means that some of your muscles are.