问题
单项选择题
心电图作为低钾血症的辅助诊断手段，有意义的心电图改变是（）
A.QRS增宽
B.PR间期延长
C.出现U波
D.T波高尖
E.异常P波
答案
参考答案：C
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心电图作为低钾血症的辅助诊断手段，有意义的心电图改变是（）
A.QRS增宽
B.PR间期延长
C.出现U波
D.T波高尖
E.异常P波
参考答案：C
Most glasses help people see better, but a new invention from Japan may soon improve language skills and language barriers instead. High-tech Company NEC has a device that it says will users to communicate with people of different . Shaped like a pair of eyeglasses without the lenses(镜片), the computer-assisted Tele Scouter would a picture-forming device to present almost real-time translations directly onto the retina（视网膜）. The text, provided instantly voice recognition and programs, would effectively provide movie-like “subtitles” （字幕） during a conversation between two people the glasses. “You can keep the flowing,” NEC market development official Takayuki Omino told reporters at Tokyo exposition (展览会) the device was on display. “This could also be used for talks with secret information,” says Omino, stating that there would be no for translators. Each user’s words would be by microphone, translated, and be instantly for conversation partners in visual text and as audio delivered through headphones. Users can still see their conversation partner’s face because the text is onto only part of the retina—the first time such technology is used in a commercial product, according to NEC. The company plans to put the Tele Scouter in Japan in November next year, at the beginning without the translation mode.
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