心电图上反映心室绝对不应期的是()
A．P-R间期
B．R-T间期
C．Q-T间期
D．Q-R间期
E．T波
参考答案：C
You have never been to the USA before,have you ?
______ . How I wish I could go there some day
A．Yes,I have
B．No, I haven’t
C．No,I have
D．Yes,I haven’t
观察颅脑损伤患者病情时，为避免患者躁动影响准确性，宜首先观察
A．瞳孔
B．呼吸
C．脉搏
D．血压
E．神志
