建立适当的理赔准备金是理赔风险防范的必要方式之一,准备金的多少取决于对理赔风险和理赔管理费用支出的预估。( )
A.对
B.错
参考答案:A
—Got your driving license?
—No. I ________ too busy to have enough practice, so I didn't take the driving test last week.[ ]
A. will be
B. am
C. have been
D. had been
黑洞发不出光线,但它却可以辐射()
A、X射线
B、射线
C、高能粒子流
D、射线