下列物质中含有共价键的离子化合物是( ) A.H2 B.Na2O2 C.NaOH

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问题:

下列物质中含有共价键的离子化合物是(  )

A.H2

B.Na2O2

C.NaOH

D.H2S

考点:共价键
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Students learn their lessons in class. They sit in the 小题1:c            listening to the teacher. This is a way of learning. Is this the 小题2:o     way for students to learn? Of course not. There is another way to learn. That is students can teach themselves. For 小题3:e         , if you can’t remember something when you are doing your 小题4:h       , what will you do? You can look at your books to 小题5:f       the answer.

How to teach yourself? The first thing you must do is reading. Read something you are小题6:i          in, or you have to read. The second is that you must ask yourself questions. A clever student is usually 小题7:g        at asking questions. The third is to answer the questions yourself by 小题8:t         hard, by reading books, and sometimes by asking

小题9:o         people. These are the ways of teaching yourself. If you keep doing like these for a long time, you are 小题10:s       to make great  progress in your study.

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一质点做半径为60cm的匀速圆周运动,它在0.2s内转过了300角,则该质点的线速度、角速度和转速是多大?

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Putnam提出的模型,是一种( )模型。它是假定在软件开发的整个生存期中工作量有特定的分布。

A.模块化成本

B.结构化成本

C.动态单变量成本

D.动态多变量成本

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某中外合资房地产开发公司,2009年发生以下业务:
(1)1月通竞拍取得市区一处土地的使用权,支付土地出让金6000万元,缴纳相关税费240万元;
(2)以上述土地开发建没普通标准住宅楼、会所和写字楼各一栋,占地面积各为1/3;
(3)住宅楼开发成本3000万元,分摊到住宅楼利息支出300万元,包括超过贷款期限的利息40万元,能提供金融机构证明;
(4)写字楼开发成本4000万元,无法提供金融机构证明利息支出具体数额;
(5)与住宅楼配套的会所开发成本480万元,无法准确分摊利息支出,根据相关规定,会所产权属于住宅楼全体业主所有;
(6)9月份全部竣工验收后,公司将住宅楼出售,取得收入15000万元;将写字楼作价9000万元与他人联营开设一商场,收取固定收入,不承担经营风险,当年收到250万元。
其他相关资料:该房地产公司所在省规定,按土地增值税暂行条例规定的高限计算扣除房地产开发费用。
[要求] 根据上述资料,按下列序号回答问题,每问需计算出合计数:

计算公司缴纳土地增值税时应扣除的开发成本的金额;

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一般的交割仓库的日常业务共分为3个阶段:商品入库、商品保管和商品出库。( )

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