行内汇款如付款人账号为一本通主账号，需输入其子账户的：（）
A、产品类别
B、产品名称
C、货币代码
参考答案：A
Some of the students are afraid of the teachers strict with them.
A．who is
B．who are
C．that is
D．that have
极谱定量分析的依据是什么？有哪几种定量方法？
