What is lean production Perhaps the best way to describe this innovative production system is to contrast it with craft production and mass production, the two other methods humans have devised to make things.
The craft producer uses highly skilled workers and simple but flexible tools to make exactly what the consumer asks for — one item at a time. Custom furniture, works of decorative art, and a few exotic cars provide current-day examples. We all love the idea of craft method — as automobiles once were exclusively — cost too much for most of us to afford. So mass production was developed at the beginning of the twentieth century as an alternative.
The mass-producer uses narrowly skilled professionals to design products made by unskilled or semiskilled workers tending expensive, single purpose machines. These churn out standardized products in very high volume. Because the machinery costs so much and it is so intolerant of disruption, the mass-
A. Only single purpose machines were needed.
B. It could reduce the cost of production.
C. It produced new products very often.
D. It produced standardized products in high volume.
Some people say that the best way to reduce the body’s mid-section is to do stomach exercise. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are "burned up". The truth is that exercise burns fat from all over the body and not from one specific area, no matter what kind of exercise. Of course, if you reduce the fat throughout your body, you will certainly see results around your waist too.
It is said that you need to exercise only twice a week in order to keep a sufficient level of physical fitness. Studies conducted by American scientists show that unexercised muscles lose their strength very quickly. After 48 to 72 hours, you must use the muscles again to reestablish the good physical effects. And what does that mean to you American scientists concluded that while daily exercise is most helpful, every other day, three days a week will keep a sufficient level of physical fitness.
Is it t
A. you will lose more weight running one mile than walking the same distance
B. you will use more energy walking one mile than running the same distance
C. for the same distance the faster you walk, the more energy you will use
D. whether you run one mile or walk the same distance, you use the same energy
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