将已经存在的各种资料档案，以查阅和归纳的方式了解所需资料的市扬调查的是（）。
A.文案调查法
B.实地调查法
C.问卷调查法
D.实验调查法
参考答案：A
Daniel, CFA, is a portfolio manager with the trust department of Citi Nation Bank. One of his accounts is his children’s trust fund. Daniel allocated IPO shares to his children’s trust fund before he has completely satisfied all the needs of his other accounts. According to AIMR Standards of Professional Conduct, which of the following standards did Daniel violate（）
A. Standard Ⅰ (A) Independence and Objective.
B. Standard Ⅳ (B) Priority of Transactions.
C. Standard Ⅳ (B) Disclosure of Conflicts to Clients and Prospects.
用于完成电信号与声音信号相互转换的元件称为（）器件。
