基本误差包括（）、（）和（）。
参考答案：分析原理误差；标准气误差；测量系统误差
___________, I have never seen anyone who’s as wise as John.
A．As long as I have traveled
B．Now that I have traveled so much
C．.As I have traveled so much
D．Much as I have traveled
下列哪些指标不能反映心室肌前负荷有()
A．平均动脉压(MAP)
B．左室舒张末压力(LVEDP)
C．左房压(LAP)
D．肺小动脉楔压(PCWP)
E．中心静脉压(CVP)
