已知i为虚数单位,复数z=i+i2+i3+…+i2011,则复数z的模为( ).

来源:www.tikuol.com 发布时间:2017-05-20 13:45
题型:填空题

问题:

已知i为虚数单位,复数z=i+i2+i3+…+i2011,则复数z的模为(   ).

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题型:单项选择题 共用题干题

男性,70岁,进行性吞咽困难半年,现能进半流质,其食管X线钡餐造影已检查。

X线表现中,下列哪一种不是早期表现()

A.食管管壁局限性僵硬

B.一侧管壁长2.5cm的充盈缺损

C.管腔狭窄伴钡剂梗阻

D.局限性黏膜皱襞增粗和断裂

E.食管壁直径为1cm的溃疡龛影

题型:单项选择题

最易发生幽门梗阻症状的溃疡是()。

A.胃角溃疡

B.胃窦溃疡

C.球后溃疡

D.胃多发性溃疡

E.幽门管溃疡

题型:阅读理解

People smile at times. However, the meaning of a smile in different cultures may be different. Depending on different cultures, smiling can express joy and amusement, but it can also show embarrassment.

People in the United States smile a lot. Every one smiles at each other in order to show they are open and friendly. However,in China, smiling is not only an expression of happiness, but also a way to avoid being embarrassed. Chinese people like smiling when they are embarrassed in order to avoid embarrassment. Smiling is a kind of good will but not sneer(嘲笑). For example: When a child falls off from a bike, the adults in China may smile, which is a kind of gentle encouragement and not a kind of impolite laugh.

When a person from the United States might blush(脸红)with embarrassment or become offensive(冒犯的), a Chinese might blush with smile. To avoid serious misunderstanding, people who engage in intercultural communication should be able to understand the meaning of smiling properly.

小题1: We can use smile to express all of the following feelings except _________,

A.joy and happiness

B.amusement

C.embarrassment

D.fear小题2: People often smile at each other in the United States because _________.

A.they are very happy

B.they want to show they are friendly

C.they want to hide their true feelings

D.they want to avoid embarrassment小题3: In China, seeing a child falls off a bike, an adult will smile in order to _______.

A.laugh at him

B.avoid his own embarrassment

C.avoid embarrassment and encourage the boy

D.show his politeness小题4: What is mainly talked about in the passage?  

A.People smile at times.

B.Smiling can express different feelings depending on different cultures.

C.Americans are more open and friendly than Chinese people.

D.The Chinese people often hide their true feelings.

题型:单项选择题

四氟化碳含量最高时(20%-40%)是在()。

A、换极时

B、出铝时

C、效应时

D、不盖槽盖板时

题型:单项选择题

北京市某广告公司2008年4月发生以下业务:
(1) 承接某化妆品公司的广告宣传业务,取得广告费400万元,其中支付给某影星做广告代言人的报酬100万元,支付给当地电视台广告部的发布费200万元;
(2) 承接某制药公司的广告宣传业务,取得广告业务收入为94万元,核算的营业成本为90万元,支付给某电视台的广告发布费为25万元,支付给某报社的广告发布费为18万元。经主管税务机关审核,认为其广告收费明显偏低,且无正当理由,又无同类广告可比价格(核定的成本利润率为16%)。
(3) 承接某酒厂的广告宣传业务,为其在某大厦楼顶制作大型灯箱广告牌,收取价款 100万元。广告公司利用自有车间进行了加工制作,为此外购材料60万元,取得了购货的发票,人工费2万元;还支付大厦管理部门批准安装的费用4万元。
(4) 当月以价值100万元不动产、30万元的无形资产投资入股某企业。
(5) 参与主办一次服装表演,取得收入10万元。
(6) 转让广告案例的编辑、制作权取得收入10万元。
根据上述资料回答下列问题:

该广告公司的业务(5)、(6)应纳营业税为( )万元。

A.-0.3

B.0.5

C.0.8

D.1