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冻干法是指先迅速冷冻,然后()
患者,13岁,三天前,左右上中切牙外伤,现咬物痛,要求治疗。检查:牙冠完整,叩(+),电测无活力,1度松动,扪痛(-),龈无红肿。X片见根折线在根尖1/3处。该患牙的处理是( )。
有下列哪项情形之一,未构成较大以上事故的属于一般A类事故()
下列()不属于元曲四大家。
正确处理()是经济效益与费用识别的关键。
近几十年来钢筋混凝土结构计算理论的发展,主要是由容许应力向()发展。
临床上常用的病理学检查方法有()
什么是卫生监督协管?
柔术(日本拳种)是我国邓若曾于1621年传到日本的。
简述中国国防的历史给予我们哪些启示?
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