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问题 单项选择题

女，40岁，诊断为毒性弥漫性甲状腺肿多年，曾先后出现以下症状，其中何为该病少见而又特征性的表现（）

A.明显多食

B.月经减少

C.心房鲚动

D.双下肢软瘫

E.胫前黏液性水肿

答案

参考答案：E

填空题

装配过程可以分为（）装配、（）装配和总装配三个阶段
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单项选择题

Virtual reality (or VR (1) ) is kind of a buzzword these days in computer graphics.VR is artificial reality created by a computer that is so enveloping that it is perceived by the mind as being truly real.VR exists in many (2) .A traditional view of virtual reality uses headsets and data gloves.The headset serves as the eyes and ears to your virtual world,projecting sights and sounds generated by the computer.The data glove becomes your hand,enabling you to interact with this (3) world.As you move your head around,the computer will track your motion and display the right image.VR is the most demanding (4) for computer graphics,requiring hardware and software capable of supporting realtime 3D (5) .

A．for certain

B．for any sake

C．for all

D．for short
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