Which of the following would the nurse expect to include in a community health program designed to control sexually transmitted diseases (STDs)

A. Mass screening of all individuals.
B. Location of the possible sources of infection.
C. Treatment of those with the disease.
D. Isolation of those suspected of having STDs.

属于网上银行外汇宝业务交易方式规定的有（）。

A、市价交易可选择输入卖出金额或买入金额

B、委托交易可选择输入卖出金额或买入金额

C、市价交易只能输入卖出金额

D、委托交易只能输入卖出金额