问题
单项选择题
《工作场所有害因素职业接触限值》中有害物质的最高容许浓度采用的计量单位是（）。
A.mg/m3
B.ppm
C.g/l
答案
参考答案：A
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《工作场所有害因素职业接触限值》中有害物质的最高容许浓度采用的计量单位是（）。
A.mg/m3
B.ppm
C.g/l
参考答案：A
| 阅读下面短文，把A-D四个句子填入文中空缺处（1-4），使短文内容完整，然后完成第5题。 |
| Mr Gregory Gale is one of the few people in England who are 100 years old, but this is not the only thing that makes him remarkable (值得注意的), 1 A few days later a radio reporter came to his house and asked him if he had any secrets of long life. This is what Mr. Gale said, "No, I don't know any 'secrets', but there are a few simple rules (规律) of good life. I've always kept them all my life. The first thing is: 2 That's absolute nonsense (纯属胡说八道)" " 3 For example, I've always smoked a few good cigars every day. Not many, mind you! Only two or three! I've also always drunk a little good wine with my meals, perhaps two or three glasses." "The third rule is to take a little exercise every day. 4 " |
| A. The second is to enjoy all the pleasures (乐趣) of life in moderation (节制). B. I've always played a little tennis or golf. C. On the day of his birthday he played a game of tennis and went for a long walk. D. Don't listen to those fools who tell you to give up all the pleasures of life! |
| 5. Which is the best title (题目) of this passage? |
[ ] |
| A. A HEALTHY OLD MAN B. SECRETS OF LONG LIFE C. AN OLD MAN IN ENGLAND D. A STRONG OLD MAN |
。如果三人一起校对只需6天就可完成。现在如果让乙一人单独校对这份书稿，则需要（）天才能完成。