问题
单项选择题
足月婴儿出生时全身皮肤青紫,Apgar评分为3分。查体:昏迷,反射消失,肌张力低下。心率慢,呼吸不规则,诊断为缺氧缺血性脑病,临床分度为
A.极轻度
B.轻度
C.中度
D.重度
E.极重度
答案
参考答案:D
足月婴儿出生时全身皮肤青紫,Apgar评分为3分。查体:昏迷,反射消失,肌张力低下。心率慢,呼吸不规则,诊断为缺氧缺血性脑病,临床分度为
A.极轻度
B.轻度
C.中度
D.重度
E.极重度
参考答案:D
小桦按题图所示的电路探究“通过导体的电流跟导体电阻的关系”.在此实验过程中,她保持电源电压不变,通过调节电阻箱先后6次改变A、B间的电阻值,测得相应的电流值如表1所示.
表1
实验次数 | I/A | A、B间电阻值R/Ω |
1 | 0.80 | 5 |
2 | 0.60 | 10 |
3 | 0.48 | 15 |
4 | 0.40 | 20 |
5 | 0.34 | 25 |
6 | 0.30 | 30 |
(2)小桦认真思考后发现了自己在实验过程中的错误,并采取了正确的实验操作.你认为小桦每次改变电阻后应该采取的正确操作是:______.
(3)正确操作实验后,小桦将得到的实验数据记录在表2中,请分析表2中的数据,你能得出什么探究结论?
______.(2分)
表2
电流I/A | 1.20 | 0.60 | 0.40 | 0.30 | 0.24 | 0.20 |
电阻R/Ω | 5 | 10 | 15 | 20 | 25 | 30 |
I’m an operating engineer, running crane(起重机) in New York City. I was in the countryside, playing golf when we got the call that a plane had the World Trade Centre. We checked out of the hotel immediately and started our way downtown. When I got home, I called the rescue center and they told me to come and get on the list. The next morning I went down to the at about 5 A. M., and four hours later I the call to come down to West Street. I called my wife and told her not to me, and that I would stay in with her. I took the subway. It stopped at West Fourth Street, so I had to the rest of the way. And somewhere in there I became when I went into something I . I once worked there in 1966 for the of the World Trade Centre. On halfway on September 12, I was frightened to see the World Trade Centre was a huge pile, maybe ten tall. And it was burning. I started to ask in which my crane might be a whistle blew suddenly warning us of some danger. I saw people running away and I really didn’t know what to do. So I did the same, too. It was as if they had the bulls go in Spain and we were running through the street. People falling down, people them up as they came by, and carrying them, just to get them out of the way, because something was extremely . I didn’t even look back. We stopped running when we got to the Battery Tunnel, and I caught my and said, “Oh, my God, I’m going to die.” Then I a little bit, thinking about what we should do next. As we started again we knocked into a fire chief officer and we asked, “What can we do to help you?”
|