简述硅钢片的用途。
参考答案：硅钢片可用于：
（1）电机铁芯；
（2）变压器铁芯。
ERP的基本思想是（）
A、计划与管理
B、控制和流程
C、计划与控制
D、流程与管理
Which of the following is TRUE about a bond with a deferred call provision（）
A. It could be called at any time during the initial call period, but not later.
B. It could not be called right after the date of issue.
C. Principal repayment can be deferred until it reaches maturity.
