呼吸困难伴一侧胸痛的是（）
A.肺栓塞
B.肺气肿
C.肺结核
D.急性肺水肿
E.肺纤维化
参考答案：A
高效液相色谱仪的组成部分包括
A．热导检测器
B．六通进样阀
C．紫外检测器
D．高压输液泵
E．色谱柱
An analyst does research aboutthe capital asset pricing model (CAPM) and the security market line (SML). With respect to the CAPM and SML, if a security has a beta of 1.3, that security should:（）
A. plot above the security market line.
B. have an above average risk premium.
C. have above average unsystematic risk.
