听诊检查心音时,若心音与脉搏同时出现,此时的心音为()
A.第一心音
B.第二心音
C.第三心音
D.第四心音
E.缩期前杂音
参考答案:A
―My chance will come soon.
― .
A.Every dog has its day.
B.A good medicine tastes bitter
C.A good name is easier lost than won
D.Blind men can judge no colors
什么叫电气主接线?