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问题 单项选择题

脑积水的声像图特征是（）①脑室率>0.5②轻度脑积水双顶径与孕周相符③脑实质被压缩④合并脊柱裂、脑脊膜膨出

A.①

B.①②

C.①②③

D.①②③④

E.①③④

答案

参考答案：D

单项选择题

静脉补钾时，补钾浓度不能超过

A．5%

B．3%

C．0.3%

D．0.5%

E．0.15%
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单项选择题

Even though you are a project manager in a pharmaceutical company，you have worked as a scientist in the industry for several years．Your subordinates look up to you for guidance and advice．The power that you have over your subordinates is （）．

A．referent

B．expert

C．legitimate

D．reward
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