治疗心功能正常的阵发性室上性心动过速,应首选()
A.利多卡因
B.地高辛
C.异搏定
D.苯妥英钠
E.阿托品
参考答案:C
When President Kennedy spoke in Berlin from behalf of the American people, he was received with a show of enormous enthusiasm.
Cc的颜色特点为().
A.白色,无暗影
B.灰白色,有暗影
C.灰白、暗灰,有暗影
D.灰白色、深灰色