题目内容
哪项不是医疗事故的特征?
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Directions: Complete the following paragraph with the correct form of the words given below.We're a(n) (1)______________ group, with people from all over the world. We're all feeling good because we know that our work will make a real (2) ______________ to the local community. When we arrived we stayed in a(n) (3) ________________ in a nearby town and spent a week getting to know each other, and as a result our (4) ____________ is very good. The (5) ______________ that arranged the trip has done a good job and everything is very (6) ______________. Another girl and I are living with a local family, and we get on with them really well. The only (7) __________ is that the family are quite poor -- we sleep on (8) _____________on the floor and I've spent all the money I (9) ________ on extra food, as I don't really like the food the family eats. But the living conditions don't matter too much to me. What matters is that I'm doing something (10) _______________.
利用两根钢轨做导体，在一定长度的钢轨两端装设轨道绝缘，中间的轨缝用钢轨接续线连接起来，并用钢轨引接线连接电源和接收设备的电路叫做轨道电路。
轨道电路由以下哪些部件组成？
轨道线路由以下哪些部件组成？
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