依据我国《保险代理机构管理规定》，我国保险代理机构许可证有效期是（） A.4年 B.

It is an interesting story and one can't put it down _____ one has finished reading it.[ ]

A. after

B. when

C. since

D. until

以矫治力的产生方式不同可以将其划分为（）

A.机械力

B.生物力

C.磁力

D.弹力

E.肌力

服务设计包括（）设计方面内容。

A.服务项目

B.服务指标

C.服务流程

D.服务监控

我国职业病名单中，列入职业肿瘤，可引起膀胱癌的毒物是

A．联苯胺
B．氯甲醚
C．石棉
D．砷
E．焦炉逸散物

In a certain animal population, for each of the first 3 months of life, the probability that an animal will die during that month is . For a group of 200 newborn members of the population, approximately how many would be expected to survive the first 3 months of life ？