企业按应收账款余额的5%计提坏账准备。2007年初，“坏账准备”账户期初余额为2万元，当年末应收账款余额为100万元；2

信息化社会已经成为大家都要面对的一个现实，下列需要计算的是（）。

“和谐社会”的主要内容包括哪些？

柜员作“对私修改客户资料”交易中，能变更的项目包括（）

在选择学前儿童科学教育的内容时，我们既要为儿童提供广泛的学习内容，同时也要考虑内容的（）。

True Friendship Young adult filmmakers all hope to show their works in international festivals like Sundance and Toronto. But what about really young filmmakers who aren't in film school yet and aren't， strictly speaking， even adults？ They are at the heart of Wingspan Arts Kids Film Festival， tomorrow， in a setting any director might envy： Lincoln Center. Complete with "red carpet" interviews and various awards， the festival has much in common with events for more experienced moviemakers， except for the age of the participants： about 8 to 18. "What's really exciting is that it's film for kids by kids，" said Cori Gardner， managing director of Wingspan Arts， a nonprofit organization offering youth programs in the New York area. This year the festival will include films not only from Wingspan but also from other city organizations and one from a middle school in Arlington， Virginia."We want to make this a national event."Ms. Gardner added. The nine shorts to be shown range from a Claymation biography of B. B. King to a science fiction adventure set in the year 3005. "A lot of the material is really mature，" Ms. Gardner said， talking about films by the New York City branch of Global Action Project， a media arts and leadership-training group. "The Choice is about the history of a family and Master Anti-Smoker is about the angers of second-hand smoke."Dream of the Invisibles describes young immigrants'（移民）feelings of both belonging and not belonging in their adopted country. The festival will end with an open reception at which other films will be shown. These include a music video and a full-length film whose title is Pressures. The festival will end with a closing ceremony.（）

MicrosoftWindows为用户建立了一个基于图标和菜单的计算机“环境”。这个友好的环境称为（）。

在工程开工前，（）应按规定向水利工程质量监督机构办理工程质量监督手续。

车轮的组成及作用是什么？

关于团体健康保险和个人健康保险，下列说法正确的是（）。

当构件设计是按最小配筋率配筋时，可按钢筋（）相等的原则进行钢筋代换。