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【简答题】
One afternoon last year, I went to a hospital in Ghana to visit a doctor friend. When I the hospital hall, I saw a woman. She had traveled from a faraway village just to bring injured girl to the hospital. The girl to be dying. But the nurses in the hospital wouldn’t help her, perhaps because she didn’t have money. When I saw that she was crying for , I took her straight to the doctors. The doctors her daughter and told the mother that her daughter needed a transfusion (输血). She would need blood (血). This sad woman was too poor to blood. I said I would give her the blood. A nurse then tested my blood. Your type was O. The nurse said, “The girl is lucky. You have the type as hers.” The nurse then took my blood and gave to the girl. The mother was thankful that she said I brought back hope to her family. I was very that I had been able to save the girl’s life. Since that day, I’ve always tried to help where I could. 小题1: A.came B.arrived C.got D.reached 小题2: A.seemed B.wanted C.looked D.happened 小题3: A.few B.little C.enough D.many 小题4: A.money B.help C.nurses D.doctors 小题5: A.found B.looked C.examined D.noticed 小题6: A.ask for B.look for C.search for D.pay for 小题7: A.same B.different C.similar D.common 小题8: A.them B.it C.they D.its 小题9: A.so B.very C.too D.quite 小题10: A.anxious B.pleased C.moved D.worried
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【简答题】著名侯氏制碱法的重要反应之一:NH 3 +CO 2 +H 2 O+NaCl=NaHCO 3 +NH 4 Cl.在生产中,NaHCO 3 易结晶析出,经过滤得到NaHCO 3 晶体和滤液.某化学兴趣小组欲探究所得滤液中溶质的成分,请你参与他们的探究活动. [提出问题]滤液中溶质的成分是什么? [作出猜想]猜想Ⅰ:NH 4 Cl猜想Ⅱ:NH 4 Cl和NaHCO 3 猜想Ⅲ:NH 4 Cl和NaCl猜...
【判断题】判断题:含蜡原油或油品,在温度下降过程中,由于蜡结晶析出而引起的凝固叫粘温凝固____2分
A.
正确
B.
错误
【判断题】在共晶相图中,由L中结晶出来的β品粒与从α中析出的β 1 晶粒具有相同的晶体结构。(    )
A.
正确
B.
错误
【判断题】24#为了防止粗煤气中夹带的碳酸氢铵由于温度降低而析出造成的管路堵塞,向冷凝器内喷入酚水,防止结晶析出。
A.
正确
B.
错误
【判断题】由液相中结晶析出晶体,是晶体形成的主要方式。
A.
正确
B.
错误
【判断题】在共晶相图中,由 L 中结晶出来的 β 晶粒与从 α 中析出的 β II 晶粒具有相同的晶体结构。
A.
正确
B.
错误
【单选题】X线管中,阳极靶面的作用是
A.
散热
B.
发生X线
C.
阻止高速电子
D.
完成高压电路的回路
E.
产生电子流
【简答题】由______________中结晶析出晶体,是晶体形成的主要方式,又可分为两种情况:1)______________2)______________。
【单选题】X 线球管阳极靶面的作用是()
A.
放射出电子
B.
阻击高速电子
C.
保持高真空度
D.
支撑玻璃管壁
【单选题】对风湿病具有诊断意义的病变是
A.
淋巴细胞浸润
B.
浆液渗出
C.
Aschoff小体
D.
纤维素样坏死
E.
粘液样变性
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