问题 单项选择题

双螺母齿差调隙式滚珠丝杠,两齿轮的齿数分别为Z1=99、Z2=100,丝杠导程t=10mm,若间隙为0.004mm,则相应的螺母应转过()个齿即可消除间隙,达到预紧的目的。

A.3

B.4

C.5

D.6

答案

参考答案:B

阅读理解

阅读理解

     If you were to walk up to Arthur Bonnet and say, "Hey, Butterfly Man," his face would break into a

smile. The title suits him. And he loves it.

     Arthur Bonnet works with the Palos Verdes blue butterfly, once thought to have died out. Today the

butterfly is coming back thanks to him. But years ago if you'd told him this was what he'd be doing

someday, he would have laughed, "You're crazy." As a boy, he used to be a little tough guy on the

streets". At age thirteen, he was caught by police stealing. At eighteen, he landed in prison for shooting

a man.

     "I knew it had hurt my mom," Bonner said after he got out of prison. "So I told myself I would not

put my morn through that pain again."

     One day he met Professor Mattoni, who was working to rebuild the habitat for an endangered

butterfly called E1 Segundo blue.

     "I saw the sign 'Butterfly Habitat' and asked, 'How can you have a habitat when the butterflies can

just fly away?'" Bonner recalls. "Dr. Mattoni laughed and handed me a magnifying glass (放大镜) ,

"Look at the leaves. ' I could see all these caterpillars (蝴蝶的幼虫) on the plant. Dr Mattoni explained, 'Without the plant, there are no butterflies. '"

     Weeks later, Bonner received a call from Dr. Mattoni, who told him there was a butterfly that needed

help. That was how he met the Palos Verdes blue. Since then he's been working for four years to help

bring the butterfly back. He grows astragals, the only plant the butterfly eats. He collects butterflies and

brings them into a lab to lay eggs. Then he puts new butterflies into the habitat.

     The butterfly's population, once almost zero, is now up to 900. For their work, Bonner and Dr.

Mattoni received lots of awards. But for Bonnet, he earned something more: he turned his life around.

     For six years now Bonnet has kept his promise to stay out of prison. While he's bringing back the

Palos Verdes blue, the butterfly has helped bring him back, too.

1. When he was young, Arthur Bonner

A. broke the law and ended up in prisonB. was fond of shooting and hurt his morn

C. often offered necessary help to other people

D. often caught butterflies and took them home

2. Bonner came to know the Palos Verdes blue after he ______.

A. found the butterfly had died outB. won many prizes from his professor

C. met Dr. Mattoni, a professor of biology

D. collected butterflies and put them into a lab

3. From the last sentence of the text, we learn that raising butterflies has ______

A. made Bonner famous

B. changed Bonner's life

C. brought Bonner wealth

D. enriched Bonner's knowledge

4. Which of the following would be the best title for the text?

A. A Promise to Morn

B. A Man Saved by Butterflies

C. A Story of Butterflies

D. A Job Offered by Dr. Mattoni

问答题

某市一家电生产企业为增值税一般纳税人,2005年度有员工1000人(其中医务人员10人,在建工程人员5人)。企业全年实现销售收入总额8000万元,实现利润总额6万元,已按此利润缴纳了企业所得税,现注册税务师受托对该企业2005年所得税纳税情况进行审查,发现如下有关税收问题,要求为企业作出正确的所得税汇算清缴:(1)全年的工资总额1000万元,职工工会经费.职工福利费和职工教育经费175万元,按照税法规定,当地确定的人均月计税工资标准为800元,该企业工会经费未上交;(2)企业2005年初坏账准备金贷方余额2万元,当年未发生坏账损失,企业根据本年末的应收账款余额200万元,又提取了坏账准备金1.5万元;(3)利润总额中含国债利息收入7万元,国债转让所得25万元,金融债券利息收入20万元,从被投资公司分回的税后股息45.6万元(被投资企业的企业所得税税率24%)。
(4)当年1月向银行借款200万元购建管理用固定资产,借款期限1年。购建的固定资产于当年10月30日完工并交付使用,企业支付给银行的年利息费用共计12万元,全部计入了财务费用;(5)企业全年发生的业务招待费用45万元,广告费60万元,业务宣传费30万元,全都作了扣除;(6)12月份,以公允价值45万元的生产设备抵偿应付账款50万元。设备原值50万元,已提取了折旧20%,清偿债务时企业直接以50万元分别冲减了应付账款和固定资产原值;(7)12月份转让一项无形资产的所有权,取得收入50万元,未作收入处理,该项无形资产的账面成本35万元也未转销;(8)12月份通过当地政府机关向贫困山区捐赠家电产品一批,成本价30万元,市场销售价格38万元,企业已进行了正确的会计处理;(9)“营业外支出”账户中还列支上半年缴纳的税款滞纳金2万元,银行借款超期罚息5万元,给购货方的回扣12万元,意外事故损失8万元(已经税务机关审批通过),非广告性赞助10万元,全都如实作了扣除。
(10)企业管理用设备按税法规定的年折旧率为8%.