美式期权只能在期权到期日执行。（）
参考答案：错
解析：
欧式期权只能在期权到期日执行，不能提前或推迟；美式期权可以在到期日或其之前的任何一个营业日执行。
管理的核心是（）
A.对现实资源的有效整合
B.计划、组织、领导和控制
C.提供有效、及时、准确的检验信息
D.人、财、物和信息
E.为临床医师及患者提供优质服务
According to CFA Institute Standards of Professional Conduct, members must preserve the confidentiality of information received from a client unless:（）
A. the information pertains to an impending tender offer.
B. the client has also provided the information to another member.
C. the member is aware of illegal activity by the client.
