在液压系统图中,图形符号“┉□”表示()。A、手动控制 B、弹簧控制 C、机械控

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问题:

在液压系统图中,图形符号“┉□”表示()。

A、手动控制

B、弹簧控制

C、机械控制

D、液压控制

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下列不属于房地产定价原则的是()。

A.定价范围浮动原则

B.反映市场供求的原则

C.利润最大化原则

D.体现物业价值的原则

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调节三羧酸循环运转最主要的酶是()

A.柠檬酸合成酶

B.丙酮酸脱氢酶

C.苹果酸脱氢酶

D.α-酮戊二酸脱氢酶

E.异柠檬酸脱氢酶

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胸腔穿刺抽取液体时,首次不宜超过()

A.500ml

B.600ml

C.800ml

D.1000ml

E.1200ml

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Vincent Willem van Gogh (30 March, 1853---29 July, 1890) was a Dutch Post-Impressionist artist. He is considered one of the greatest artists with great influence on the greatest artists with great influence on the 20th-century art.

Van Gogh spent his early adult life working for a firm of art dealers. After a brief period as a teacher, he became a missionary (传教士) in a very poor mining region. He did not begin his career as an artist until 1880; however, during the last ten years of his life, he produced more than 2,000 pieces, including around 900 paintings and 1,100 drawing and sketches (素描). He worked only with somber colours until he met Impressionism and Neo-Impressionism in Paris. Van Gogh used their bright colours and style of painting in a uniquely recognizable style. Most of his best-known works were produced during his final two years, when he was suffering from serious mental illness.

In 1890, at the age of 37, van Gogh shot himself in the chest. He died two days later, with Theo, his brother and his best friend, at his side, who reported his last words as “The sadness will last forever”. It would not take long before his fame grew higher and higher.

Van Gogh’s mother threw away quite a number of his paintings. The only painting he sold during his lifetime, The Red Vineyard, was created in 1888. It is now on display in the Pushkin Museum in Moscow, Russia. Several paintings by van Gogh rank among the most expensive paintings in the world. On March 30, 1987 van Gogh’s painting Irises was sold for a record of $53.9 million at Southby’s, New York. On May 15, 1990 his Portrait of Doctor Gachet was sold for $83.5 million at Christie’s, thus setting a new price record.

小题1:When did van Gogh begin his career as an artist?

A.At the age of 17.

B.At the age of 27.

C.In his early adult adult life.

D.In his early childhood.小题2:The underlined word “somber” in Para. 2 means         .

A.colourful

B.different

C.dark

D.bright小题3:What’s the right order of van Gogh’s life experience?

a. worked as a teacher

b. took up drawing

c. worked in an art firm

d. worked as a missionary

A.c, a, b, d

B.c, a, d, b

C.b, c, a, d

D.b, a, c, d小题4:Which of the following can best describe van Gogh’s final two years?

A.Sand and boring.

B.Normal and peaceful.

C.Happy but fruitless.

D.Painful but productive.小题5:What can we learn from the passage?

A.Van Gogh didn’t become famous until he dies.

B.Van Gogh sold many paintings in his life.

C.Van Gogh had become famous as an artist when he was alive.

D.Irises was the most expensive among van Gogh’s paintings.

题型:单项选择题

微分方程dy-2xydx=0在初始条件y(0)=1下的特解是( ).

A.

B.

C.

D.

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