债券—债券的优点是（1）筹集对象广（2）资本成本较低（3）可以保障其公司的控制权
Coperate bonds — the advantsges of coperate bonds are:
(1) The objects of raising the fund is wide.
(2) The cost of capital is low.
(3) The rights of controling the company is protected
缺点是（1）财务风险高（2）限制条件多（3）筹资额有限
Disavantages:
(1) High financial risk.
(2) A lot of restrictions.
(3) Limited of fund can be raised.