咬合干扰不包括（） A.正中咬合干扰 B.前伸咬合干扰 C.工作侧咬合干扰 D.非工 发布时间：2017-05-15 17:07 │ 来源：www.tikuol.com 题型：单项选择题 A1/A2型题 问题： 咬合干扰不包括（）A.正中咬合干扰B.前伸咬合干扰C.工作侧咬合干扰D.非工作侧咬合干扰E.正中关系咬合干扰
题型：单项选择题 A1/A2型题 根据对话情景和内容,从对话后所给的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(说明:E涂AB；F涂AC；G涂AD)A. You are lucky to be in such a big city where everything is wonderful. B: I don't think so. 1 A: Why? City life seems to be very interesting and comfortable.B: 2 You see citizens are obliged to accept an unnatural way of life. They can hardly enjoy sunshine because of tall buildings around their houses. A: That's terrible. 3 B: Yes, perhaps. But the cost of living is much higher. 4 A: I didn't think of that. Now I'd rather live in my village all my life. Would you like to go to the country for a change? B: Great! 5 A. But working in a big city means much more money without hard work like farming. B. Actually I don't have interest in city life. C. I think country life is as interesting as city life. D. Not really. E. Sometimes people can't make ends meet these years. F. So it is. G. I'd love to if I'm free. 查看答案
题型：单项选择题 A1/A2型题 下列哪项不是病例-对照研究的特点（）。A.比较经济、实施容易B.可从所得结果估计相对危险度C.可直接计算特异危险度D.选无本病者作为对照E.回顾性地评价过去的暴露史时，可能产生偏差 查看答案
题型：单项选择题 A1/A2型题 某线路送有功10MW，送无功9Mvar，零序方向继电器接线正确，模拟A相接地短路，继电器的动作情况是（）。A.通入A相负荷电流时动作；B.通入B相负荷电流时动作；C.通入C相负荷电流时动作；D.以上三种方法均不动作。 查看答案