（）项目组织适用于大型复杂的施工项目。A、直线职能式B、工作队式C、矩阵式D、事业部

已知等比数列a_n的前n项和为S_n，且S₃=3a₁，则数列a_n的公比q的值为（　　）

A．-2

B．1

C．-1或2

D．1或-2

第二节：语法填空（共10小题，每小题1分，满分10分）

阅读下面短文，根据上下文填入适当的词语，或使用括号中的词语的适当形式填空，并将答案填写在答卷标号为36---45的相应位置。

When you start talking about good and bad manners, you immediately start meeting difficulties. Many people just cannot agree with  36  they mean. We asked a lady, who replied that she thought you could tell a well-mannered person  37  the way they occupied the space around them. However,  38  second person thought that this was  39  a question of civilized behavior than good manners. Instead, this other person told us a story about an American who  40  (invite) to an Arab meal in one of the   41   (country) of the Middle East. The American hadn’t been told much about the kind of food he might expect.   42  he had known about Arab food, he might have behaved better. Immediately before him was a very flat piece of bread that looked, to him, very much like a napkin.  43  (pick) it up, he put it into his collar(衣领) so that it fell across his shirt. His Arab host, who had been watching, said nothing,  44  immediately copied the  45 (act) of his guest. And that, said the second person, was a fine example of good manners.

军官、士兵依行政职务和军衔，构成首长和（）、上级和下级以及同级的关系。

A、部属

B、下属

C、下级

D、领导

长江公司坏账核算采用备抵法，并按应收款项余额百分比法计提坏账准备，各年计提比例假设均为年末应收款项余额的5%。2008年初“坏账准备”账户的贷方余额为60000元；2008年客户甲单位所欠20 000元按规定确认为坏账，应收款项年末余额为950 000元；2009年客户乙单位破产，所欠款项中有6000元无法收回，确认为坏账，年末应收款项余额为900 000元；2010年已冲销的甲单位所欠20000元账款又收回15 000元，年末应收款项余额为1 000 000元。则该公司在上述三年内对应收款项计提坏账准备累计计入资产减值损失的金额为( )元。

A．7 500

B．11 000

C．1 000

D．3 500

深冷装置轻烃主要组分是C2~C4碳氢化合物，其中含少量的（）。

A.甲烷

B.戊烷和已烷

C.戊烷和庚烷

D.已烷和庚烷