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目前日期文章:201012 (4)

瀏覽方式: 標題列表 簡短摘要

The Basics of Welding Safety

Proper welding safety starts with familiarizing yourself and other operators with the welding equipment and the manufacturer’s recommendations. Take the time to read the operator’s manual thoroughly and follow all of the safety, operation and maintenance instructions it contains. Keep the manual handy so new users can acquaint themselves with the machine. Should the operator’s manual become lost or damaged, request a new one from the manufacturer. Miller Electric and many other manufacturers provide product manuals on-line. Spanish and French language versions are available for some of the most common products.

The Well-Dressed Welder

Arc welding produces sparks and emits intense visible and invisible rays that pose several hazards to unprotected skin and eyes. When welding, adequately protect your skin. Shorts, short sleeves, open collars all leave you vulnerable to burns from both flying sparks and the arc rays. Wear only flame-resistant clothing, and button your cuffs and pockets to prevent them from catching sparks. Pants cuffs, too, can catch sparks and should be avoided.

Figure 1: The well-dressed (or safely dressed welder) no longer has to use a clumsy, ill-fitting jacket. Modern welding garments are more functional, flexible and better fitting. Note that once the welder dons the helmet, he will have no skin exposed to sparks or arc burns. A flame resistant jacket is completely buttoned, allowing no pockets or spaces for a spark to catch. A welding bandana protects the top of his head from sparks. An auto-darkening welding helmet decreases the chance for repetitive stress injury to one’s neck and can adjust to changing arc parameters conditions.

With respect to footwear, high top leather shoes offer the best protection. Tennis shoes and other cloth shoes are inadequate; they can catch a spark and smolder unnoticed and their components can melt and stick to your skin.

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假如我說
I was ____ not talking about you.
(我完完全全不是在說你)
那麼該填哪個好呢?

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易混詞辨析

 

1 . affect , effect , influence , impact

本組詞都有“影響”的意思,但分別有一些用法上的不同。 affect 意為“影響”,強調產生不好的影響或結果effect 意為“招致、產生、促成”,著重強調影響所產生的結果influence 意為“影響、對……有作用”,強調對人或物的性格、行為或看法產生潛移默化的作用或影響impact 除了有“影響”之外,還有“衝擊,撞擊”的意思。

Will the government policy be affected ( changed ) by the appointment of a new minister? 政府政策是否會因為任命了一位新部長而受影響

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  1. abacus
  2. abandon
  3. abase
  4. abashed
  5. abate
  6. abbreviate
  7. abdicate
  8. abdomen
  9. abduct

10. aberrant

11. abet

12. abeyance

13. abhor

14. abhorrent

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