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[填空题]The strain of avian influenza virus that has led to the deaths of 140 million birds and 60 people in Asia in the past two years appears to be slowly acquiring genetic Changes typical of the "Spanish flu" virus that killed 50 million people nearly a century ago, researchers said yesterday.
How far the "bird flu" virus has traveled down the evolutionary path to becoming a pandemic virus is unknown. Nor is it certain that the much-feared strain, designated as influenza A/H5N1, will ever acquire all the genetic features necessary for rapid, worldwide spread.
Nevertheless, the similarities between the Spanish flu virus of 1918 and the H5N1 strain slowly spreading through Asia provide unusually concrete evidence of how dangerous the newer virus is. At least four of its eight genes now contain mutations seen in the deadly strain that circled the globe during and after World War Ⅰ.
The comparison of the old and new flu viruses is the first practical use of a science use of
[单项选择]下列哪项不是复发性口腔溃疡的临床特征
A. 好发于中青年
B. 反复发作的溃疡为圆形或椭圆形,表面有黄色伪膜,周围红晕
C. 多见于唇、颊、舌等非角化粘膜
D. 病变可影响到口周皮肤
E. 病程7~14天,有自限性
[简答题]
阅读以下说明和流程图,回答问题1和问题2,将解答写在对应栏内。
【说明】
存在某鲜花批发系统,系统中处理的信息单元有鲜花和客户,对鲜花使用编号进行唯一标识,鲜花的具体信息包括:名称、颜色、等级。客户包括鲜花种植商,鲜花经销商,客户不使用编号,只需要名称和地址。系统功能如下所述。
(1)当系统统计销存清单时发现某种鲜花当前库存数量少于指定最低库存量时,向鲜花种植商发出采购单,订单中要记录所需鲜花的信息、数量、供应商名称和地址。
(2)收到鲜花种植商的鲜花后,向系统录入归档送货单,要记录交易对应的采购单和实际金额。
(3)当某种鲜花库存数量大于或等于订购数量时,接受鲜花经销商的订货单,并更新销存清单,系统要求订单中标明鲜花的信息和经销商的信息。
(4)鲜花经销商订购的鲜花到达批发环节后,系统生成提货单,包括鲜花信息和经销商信息,然后将提货单发给经销商,等待提货。
(5)系统还要随时可以接受管理人员对于销售和库存的查询,并生成销售与库存情况表,提供给管理人员,包括鲜花信息、本周销售数量、库存数量。
现在假定顶层图是正确的,客户信息文件已经存在并可使用。
[判断题]目前,我国注册会计师审计业务中的被审计单位主要是上市公司和国有企业。其他企业,如一人有限责任公司等,尚未纳入强制审计的范围。 ( )
[单项选择]自总皂苷中分离酸性皂苷可选用的方法是
A. 乙醚沉淀法
B. 胆甾醇沉淀法
C. 铅盐沉淀法
D. 吉拉德试剂提取法
E. 碱水提取法
[简答题]根据“给定资料3”,谈谈对“撤点并校”这一举措的认识。
[要求] 准确、全面、分析深入。不超过250字。
[填空题]
also bank borrow buy earn expensive
increase keep loan probably statement still
Where you save your money often depends on what you are saving it for. If you are saving money to (51) a CD or to go to a concert, then (52) you would keep it somewhere in your room.
If you are saving money for something more (53) , like a mountain bike or a school trip, where would you save it
One place to save money is the (54) . Putting your money in a savings account will help your money (55) more money. If you put your money in a piggybank, in a year you’ll (56) have the same amount of money you put in. However, if you put your money in a savings account, in a year, you’ll have more money than you put in. Why
When you (57) your money in a bank, your money earns interest. Interest is the amount of money a bank pays you for using your money. The bank uses your money to (58) mo
[判断题]会计电算化软件市场的培育与发展是广义会计电算化的工作范畴。( )