SECTION A CONVERSATIONS
Directions: In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.
听力原文:W: Carl, what's it like now? You have been training pretty hard for the Olympics and other major competitions for many years.
M: Well, right now this is my last season. Of course I'm staying in shape to do that. But I'm going to stay in shape. I mean I've always been fit so that's something I'm interested in doing.
W: You don't want to sit down and have a double cheeseburger? Come on, Carl.
M: No, no. That's just because I've always tried to stay in shape and I like that, it's obviously healthy for me as well.
W: Is there anything in the back of your mind that wants you to take part in the Olympic Games again? How old are you now Carl?
M: I'm 35, and no, there is nothing in the back of my mind. I've gone long enough and now it's time, I think. For me it's a lot of fun. But you can't go on for ever. You can make two choices: you can run until they won't let you in meets anymore or you can just say this is enough. I decide on the second.
W: Good for you. And you certainly would be in that competition for greatest Olympian ever with the 9 gold medals.
Why does Carl avoid a double cheese burger?
A.Because he has to take part in all kinds of meets.
B.Because he's been on a diet.
C.Because he doesn't like to eat it in this season.
D.Because he likes to stay in shape.
第2题
车间空气中有害物质的最高容许浓度可在《工作场所有害因素职业接触限值》(GBZ2-2002)国家标准中查到。()
第3题
A.该工作场所甲的浓度未超过职业接触限值
B. 该工作场所乙的浓度超过职业接触限值
C. 该工作场所丙的浓度超过职业接触限值
D. 该工作场所三种有害因素超过职业接触限值
第4题
A.可燃性气体和蒸气的浓度超过爆炸下限(LEL)的8%
B.空气中爆炸性粉尘浓度达到或超过爆炸下限的30%
C.空气中氧含量低于22%
D.空气中有害物质的浓度超过工作场所有害因素职业接触限值
E.气溶胶的浓度超过爆炸下限(LEL)的10%
第5题
根据《工作场所有害因素职业接触限值》(GBZ 2-2002),化学因素的职业接触限值可分为时间加权平均容许浓度、()和()三类。
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