下列关于酶的叙述中,正确的是() A.酶都是由内分泌腺细胞合成的,具有高效性和专一性

题型:单项选择题

问题:

下列关于酶的叙述中,正确的是()

A.酶都是由内分泌腺细胞合成的,具有高效性和专一性

B.酶的形成都要经过核糖体的合成、内质网和高尔基体的加工

C.酶催化效率高是因为其降低反应所需活化能的作用显著

D.人体中酶的活性受温度、pH的影响,并只在人体的内环境中起作用

考点:高中生物酶与ATP酶与ATP题库
题型:单项选择题

On June 11th, 2013, China sent up her tenth spaceship Shenzhou Ⅹ into space successfully. And three astronauts went together with it. They were Nie Haisheng, Zhang Xiaoguang and Wang Yaping. Here is some information about the three astronauts.

Nie Haisheng was born in September, 1964. He is from Xiangyang, Hubei. After graduating from high school, he joined the PLA Air Force, and became a fighter pilot. In 1998, he was chosen for the astronaut program. He carried out Shenzhou Ⅵ with Fei Junlong in 2005. In 2013, he flew into space for his second time with Shenzhou Ⅹ. He is the commander of this mission.

Zhang Xiaoguang is from Jinzhou, Liaoning Province. He was born in May, 1966. Zhang joined the army in June 1985. In January 1998, Zhang was trained as one of China’s first batch(一批) of astronauts. Before he was trained as an astronaut, Zhang was a senior pilot. It’s reported that Zhang Xiaoguang is very humor and likes playing jokes very much.

After Liu Yang, Wang Yaping is the second woman astronaut in China. She was born in 1980 in Yantai, Shangdong. Wang Yaping joined the PLA in 1997. In 2010, Wang became a member of the second batch of Chinese astronauts and was chosen to the crew of the Shenzhou Ⅹ space mission in April, 2013. Wang is China’s first astronaut to give lectures to middle and elementary school students while in space.

小题1:How many astronauts were there flying in Shenzhou Ⅹ ?

A.Two

B.Three

C.Four

D.Five小题2:Who has been to space twice?

A.Fei Junlong

B.Zhang Xiaoguang

C.Wang Yaping

D.Nie Haisheng小题3:How old is Zhang Xiaoguang in 2013?

A.45

B.46

C.47

D.48小题4:How long has Wang Yaping been an astronaut by 2013?

A.For 16 years.

B.For 3 years.

C.For 23 years.

D.For 13 years.小题5:Which one of the following is wrong?

A.Zhang Xiaoguang is shy and he doesn’t like talking.

B.China has sent up 10 spaceships into space.

C.Nie Haisheng is the commander of Shenzhou Ⅹ.

D.Wang Yaping gave a lecture to students while in space.

题型:单项选择题

风疹患者应隔离至出疹后()

A.3天

B.5天

C.9天

D.10天

E.15天

题型:单项选择题

以听眉线为基线,层厚、层距2mm的耳部横断面CT扫描,在咽鼓管层面不能显示的结构是

A.外耳道

B.乙状窦

C.颈静脉孔

D.颈动脉管

E.后半规管

题型:单项选择题

以太网自动协商功能能设置100BaseT链路的()。

A.只有端口速度

B.只有双工模式

C.端口速度和双工模式

D.端口速度、双工模式以及分组速率

题型:单项选择题

具抗铜绿假单胞菌的作用()

A.林可霉素

B.克拉霉素

C.红霉素

D.阿米卡星

E.阿莫西林

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