通过观察直接动脉测压波形可获得的信息是()
A.左心室收缩的相对强度
B.估计每搏量
C.估计体循环阻力
D.心率
E.以上都是
参考答案:E
颞下颌关节脱位的症状、体征有()
A.口弹性固定于半张合位
B.下颌骨下垂
C.咬肌痉挛
D.耳屏前方凹陷
E.下颌偏向健侧,头偏向患侧
He held out his fist before the young man and tried to anger him ______. [ ]
A. for purpose
B. on purpose
C. in purpose
D. by purpose