听力原文: M: Did you take these pictures? They are very good.
W: Yes, I think they turned out very well too. I'd like to bring my camera with me wherever I go. In that way if I see something attractive I can snap a picture of it.
M: Carrying a big camera round is too much trouble for me.
W: My camera is really small enough. Here let me show you.
M: That is a compact camera. But you must know a lot about photography to get such professional looking results.
W: Not necessarily. This camera is simple to work.
M: Does this model come with a flash attachment for indoor shot?
W: Better than that. It has a built-in electronic flash and an automatic focus too. I don't even have to worry about focusing.
M: That's what I need. When I take pictures, they usually come out blurry because I don't adjust the lenses properly, And I hate photos that are out of focus. Is the camera like yours very expensive?
W: Less than you'd expect. Why don't you check the prices at Headfields Demonstrate? This model is on sale there last week.
M: I think I will. It certainly won't hurt to take a look.
As the conversation begins, what are the man and woman doing?
A.Looking at some photographs.
B.Selling cameras.
C.Teaching a photography class.
D.Repairing camera equipment.
第1题
要求生化检验结果的误差应该 ()
A、在允许误差范围内
B、98%在允许误差范围内
C、96%在允许误差范围内
D、95%在允许误差范围内
E、99%在允许误差范围内
第4题
定量分析工作要求测定结果的误差()。
A.愈小愈好
B.等于零
C.没有要求
D.在允许误差范围内
第6题
定量分析要求测定结果的误差:()
A.愈小愈好
B.等于零
C.没有要求
D.略大于允许误差
E.在允许误差范围内
第7题
定量分析工作要求测定结果的误差
A、越小越好
B、等于零
C、在允许误差范围之内
D、略大于允许误差
E、随操作人员熟练程度而定
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!