退票的旅客需要报销时，如只核收退票费，应交给旅客（）。
A.退票报告
B.退票费报销凭证
C.退款证明书
D.退票报销凭证
参考答案：B
请描述DRNC820的BAM软件升级和升级后的回退过程.
Strict measures have to be _ to protect _ children from family abuses. [ ]
A. adapted; adopted
B. adopted; adopted
C. adjusted ; adjusted
D. attached ; adopte
