听诊时区别第一心音与第二心音很重要,下列支持前者的是().
A.心尖部听诊最清楚
B.强度较低
C.音调较高
D.历时较短
E.心尖搏动后出现
参考答案:A
妄想最具特征性的特征是()
A.内容离奇
B.逻辑倒错
C.是病态的
D.错误的判断
E.无现实基础但深信不疑
A man may usually be known by the books he reads _____ by the friends he keeps.
A.as usual
B.as soon as
C.as if
D.as well as