据我国著作权法的规定,属于戏剧作品的是().A、话剧 B、相声 C、评书 D、电视剧

题型:单项选择题

问题:

据我国著作权法的规定,属于戏剧作品的是().

A、话剧

B、相声

C、评书

D、电视剧

考点:法学知识产权法知识产权法题库
题型:单项选择题
口算.
14×50=
20×100=150×6=308×21≈100-95+5=
51×19≈90÷5=291×8≈28万+32万=125×4÷4=
题型:单项选择题

HNO2是一种弱酸,且不稳定,易分解生成NO和NO2;它能被常见的强氧化剂氧化;在酸性溶液中它也是一种氧化剂,如能把Fe2氧化成Fe3。AgNO2是一种难溶于水、易溶于酸的化合物。试回答下列问题:

(1)人体正常的血红蛋白含有Fe2。若误食亚硝酸盐(如NaNO2),则导致血红蛋白中的Fe2转化为Fe3而中毒,服用维生素C可解毒。下列叙述不正确的是________(填序号)。

A.亚硝酸盐被还原               B.维生素C是还原剂

C.维生素C将Fe3还原为Fe2        D.亚硝酸盐是还原剂

(2)下列方法中,不能用来区分NaNO2和NaCl的是________(填序号)。

A.测定这两种溶液的pH

B.分别在两种溶液中滴加甲基橙

C.在酸性条件下加入KI—淀粉溶液来区别

D.用AgNO3和HNO3两种试剂来区别

(3)某同学把新制的氯水加到NaNO2溶液中,观察到氯水褪色,同时生成NaNO3和HCl,请写出反应的离子方程式:___________________________________。

(4)Fe与过量稀硫酸反应可以制取FeSO4。若用反应所得的酸性溶液,将Fe2转化为

Fe3,要求产物纯净,可选用的最佳试剂是________(填序号)。

a.Cl2       b.Fe        c.H2O2       d.HNO3

(5)若FeSO4和O2的化学计量数比为2∶1,试配平下列方程式:

(6)高铁酸钾(K2FeO4)是一种新型、高效的绿色水处理剂,在水中发生反应生成氢氧化铁胶体。高铁酸钾作为水处理剂发挥的作用是________________________________。

题型:单项选择题

George Gershwin, born in 1998, was one of America’s greatest composers. He published his first song when he was eighteen years old. During the next twenty years he wrote more than five hundred songs.

Many of Gershwin’s songs were first written for musical plays performed in theatres in New York City. These plays were a popular form of entertainment in the 1920s and 1930s. Many of his songs have remained popular as ever. Over the years they have been sung and played in every possible way — from jazz to country.

In the 1920s there was a debate in the United States about jazz music. Could jazz, some people asked, be considered serious music? In 1924 jazz musician and orchestra leader Paul Whiteman decided to organize a special concert to show that jazz was serious music. Gershwin agreed to compose something for the concert before he realized he had just a few weeks to do it. And in that short time, he composed a piece for piano and orchestra which he called Rhapsody in Blue. Gershwin himself played the piano at the concert. The audience were thrilled when they heard his music. It made him world-famous and showed that jazz music could be both serious and popular.

In 1928, Gershwin went to Paris. He applied to study composition (作曲)with the well-known musician Nadia Boulanger, but she rejected him. She was afraid that classical study would ruin his jazz-influenced style. While there, Gershwin wrote An American in Paris. When it was first performed, critics (评论家)were divided over the music. Some called it happy and full of life, to others it was silly and boring. But it quickly became popular in Europe and the United States. It still remains one of his most famous works.

George Gershwin died in 1937, just days after doctors learned he had brain cancer. He was only thirty-nine years old. Newspapers all over the world reported his death on their front pages. People mourned the loss of the man and all the music he might have still written.

小题1:Many of Gershwin’s musical works were ________ .

A.written about New Yorkers

B.Composed for Paul Whiteman

C.played mainly in the countryside

D.performed in various ways小题2:What do we know about the concert organized by Whiteman?

A.It attracted more people to theatres

B.It proved jazz could be serious music

C.It made Gershwin leader of the orchestra

D.It caused a debate among jazz musicians小题3:What did Gershwin do during his stay in Paris?

A.He created one of his best works

B.He studied with Nadia Boulanger

C.He argued with French critics

D.He changed his music style小题4:What do we learn from the last paragraph?

A.Many of Gershwin’s works were lost

B.The death of Gershwin was widely reported

C.A concert was held in memory of Gershwin

D.Brain cancer research started after Gershwin’s death.小题5:Which of the following best describes Gershwin?

A.Talented and productive

B.Serious and boring

C.popular and unhappy

D.Friendly and honest

题型:单项选择题

减少和排除散射线的方法中,下列哪项错误()

A.缩小照射野

B.用金属后背盖的暗盒

C.用遮线筒或缩光器来

D.选择高电压摄影的方法

E.使用滤线栅

题型:单项选择题

某指令流水线由5段组成,各段所需要的时间如下图所示。

连续输入10条指令时的吞吐率为()。

A.10/70Δt

B.10/49Δt

C.10/35Δt

D.10/30Δt

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