着火源必须具有（）。
A.一定的温度
B.一定的压力
C.一定的能量
D.一定的温度和能量
参考答案：D
After 10 years of hard work , the lady has turned into a movie star, _________ she dreamed of becoming in her childhood.
A．whose
B．what
C．that
D．which
女性患者，38岁，心悸、胸闷10天。
该患者心电图检查见下图，应考虑为（）.
A.窦性停搏
B.二度Ⅱ型窦房阻滞
C.二度Ⅰ型窦房阻滞
D.二度Ⅱ型房室传导阻滞
E.窦性心律不齐
