[简答题]带电灭火应注意哪几个问题？

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Ever since John Burrows and his wife Carol opened their first hair salon in 1983, they have been taking on apprentices.
"In my generation, an apprenticeship was the way to learn a trade so it was the obvious way for us to get the skilled staff we needed," Mr. Burrows says.
Today, the Burrows’ salon, Upper Cut in Weston-super-Mare, employs 35 people. Of the 16 stylists, 13 progressed through apprenticeships and Mr. Burrows believes a strong culture of training is integral to the company’s success.
"Without the apprenticeships scheme our business wouldn’t be anything like the size it is today," Mr. Burrows says. The high-quality training the apprenticeships provide guarantees growth. The more skills staff have, the more effective a business will become.
Although Mr. Burrows is an advocate of the scheme, he concedes that occasionally he has suffered problems.
They have experienced epi
A. introduce the present situation of apprentices.
B. demonstrate the importance of apprenticeship.
C. show how to choose an excellent apprentice.
D. compare the differences between two companies in using the apprenticeship.

[A] Here is a guideline to evaluate your current posture. Step in front of a mirror and observe the following. Are you shoulders parallel to the floor or are they inclined to any side They have to be parallel to the floor and at the same level. Is your chin parallel to the floor The chin has to be parallel to the floor. Are your ears in line with your shoulders This helps to keep the head in theright place. Are your knees straight or are you locking them back The knees should be relaxed and centered, not forward, and not locked-on at the back.
[B] Once you determine the problem with your posture that is what you need to work on. Try to correct it to get the right posture, you can do a few things yourself and also use a chiropractor. It will take practice. You probably have had many years of bad posture; so it will take time to make the new positions a habit. Practice and practice every time you remember and hold the right position as long as you can.
[C] If we do