单项选择题

不属于低钾血症患者的心电图表现是

A.出现U波
B.T波宽而平
C.ST段上移
D.T波倒置
E.Q-T间期延长
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The option premium is______.A.the price at which an option writer agrees to sell an optionB.the price at which an option writer agrees to buy an optionC.the difference between the price of the underlying asset and the strike priceD.none of the above
A.A.the
B.the
C.the
D.none
单项选择题
化疗患者合并口腔溃疡时，进食前用丁卡因喷口腔，其浓度为
A.0.01%
B.0.02%
C.0.03%
D.0.04%
E.0.05%
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