属三羧酸循环中的酶是 A.6-磷酸葡萄糖脱氢酶 B.苹果酸脱氢酶 C.丙酮酸脱氢酶

题型:单项选择题

问题:

属三羧酸循环中的酶是

A.6-磷酸葡萄糖脱氢酶
B.苹果酸脱氢酶
C.丙酮酸脱氢酶
D.NADH脱氢酶

考点:普通考研西医综合西医综合
题型:单项选择题

游泳池内有清水12m3,现以每分钟2m3的流量往池里注水,2小时可将池灌满。

(1)求池内水量A(m3)与注水时间t(分)之间的函数关系式,并指出自变量t的取值范围;

(2)当游泳池水注满后,以每分钟4m3的流量放出废水,求池内剩余量B(m3)与放水时间x(分)之间的函数关系式,并指出自变量的取值范围。

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男,49岁,入院诊断为肝内外胆管结石,拟行肝内外胆管切开取石术,既往有胸闷、心前区不适8年。

若用静脉麻醉,不宜选用的静脉麻醉药是()。

A.氯胺酮

B.硫喷妥钠

C.依托咪酯

D.丙泊酚

E.咪达唑仑

题型:单项选择题

阅读理解。

     The engineer Camillo Oliver was 40 years old when he started the company in 1908.

     At his factory in Ivrea, he designed and produced the first Italian typewriter. Today the company's head

office is still in Ivrea, near Turin, but the company is much larger than it was in those days and there are

offices all around the world.

     By 1930 there was a staff of 700 and the company turned out 13,000 machines a year. Some went to

customers in Italy, but Olivetti exported more typewriter to other countries.

     Camillo's son, Adriano, started working for the company in 1924 and later he became the boss. He

introduced a standard speed for the production line and he employed technology and design specialists. The

company developed new and better typewriters and then calculators (计算机). In 1959 it produced the ELEA

computer in Italy.

     After Adriano died in 1960, the company had a period of financial problems. Other companies, especially

the Japanese, made faster progress in electronic technology than the ITalian company.

     In 1978, Carlo de Benedetti became the new boss. Olivetti increased its marking and service networks and

made agreements with other companies to design and produce more advanced office equipment. Soon it

became one of the world's leading companies in information technology and communications. There are now

five independent companies in the Olivetti group-one for personal computers, one for systems and services,

and two for telecommunications.

1. From the text we learn that _____. [ ]

A. by 1930 Olivetti produced 13,000 typewriters a year

B. Olivetti earned more in the 1960s than in the 1950s

C. some of Olivetti's 700 staff regularly visited customers in Italy

D. Olivetti set up offices in other countries from the very beginning

2. What was probably the direct result of Olivetti's falling behind in electronic technology? [ ]

A. Adriano's death.

B. A period of financial problems.

C. Its faster progress.

D. Its agreements with other companies.

3. What do we know about Olivetti?[ ]

A. It produced the best typewriter in the world.

B. It designed the world's first mainframe computer.

C. It exported more typewriters than other companies.

D. It has five independent companies with its head office in Ivrea.

4. The best title for the text would be _____. [ ]

A. The Origin of Olivetti

B. The Success of Olivetti

C. The History of Olivetti

D. The Production of Olivetti

题型:单项选择题

承兑行应每天查看承兑汇票到期情况,于承兑汇票到期前()日向出票人发出书面通知,通知出票人将差额款项存入开户行.

A.7

B.10

C.20

D.30

题型:单项选择题

弱碱性阴离子交换树脂对水中的阴离子交换吸附顺序是:()。

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