0.60g某饱和一元醇 A,与足量的金属钠反应,生成氢气112mL(标准状况)。

题型:计算题

问题:

0.60g某饱和一元醇 A,与足量的金属钠反应,生成氢气112mL(标准状况)。求该一元醇的分子式。

考点:醇的通性乙醇
题型:计算题

Spaceship
Time
Astronaut
Event
Shenzhou V
2003.10.15
—10.16
Yang Liwei
China became the third country to succeed in sending up the manned spaceship into space.
Shenzhou VI
2005.10.12
—10.17
Fei Junlong  Nie Haisheng
 
Shenzhou VII
2008.9.25
—9.28
Zhai Zhigang
Liu Boming
Jing Haipeng
Three Chinese astronauts were sent into the space together. Zhai Zhigang went out of the spaceship and walked in space for the first time.
Shenzhou VIII
2011.11.1
—11.17
No astronaut
Shenzhou VIII connected itself to Tiangong I successfully.
Shenzhou IX
2012.6.16
—6.29
Jing Haipeng
Liu Wang
Liu Yang
Astronauts connected Shenzhou IX to Tiangong I successfully by controlling them by hand. Liu Yang became the first woman astronaut who came into the space in China.
 
根据表格内容,选择最佳答案。
小题1:______ country (countries) had sent their astronauts into space before China.
A.OneB.TwoC.ThreeD.Four
小题2:______ was sent into the space twice among these astronauts.
A.Yang LiweiB.Fei JunlongC.Nie HaishengD.Jing Haipeng
小题3:______ walked in the space for the first time in China.
A.Yang Li WeiB.Zhai ZhigangC.Liu BomingD.Liu Yang
小题4:_______ has the same number of astronauts as Shenzhou IX.
A.Shenzhou VB.Shenzhou VIC.Shenzhou VIID.Shenzhou VIII
小题5:Liu Yang ________ in China.
A.became the first woman astronaut who came into the space
B.is the first astronaut who came into the space
C.walked in the space for the first time
D.connected Shenzhou VIII to Tiangong I successfully
题型:计算题

若(x2+y2)(x2+y2-1)=6时,t=x2+y2的值为(  )

A.t1=-2,t2=3

B.t=3

C.t1=2,t2=3

D.t=2

题型:计算题

在对蛋进行加工烹调时,较易损失的营养素是()

A.蛋白质

B.脂肪

C.乳糖

D.矿物质

E.维生素B1

题型:计算题

假设三个进程共享四个资源,每个进程一次只能预定或释放一个资源,每个进程最多需要两个资源,试证明这样做不会发生死锁。

题型:计算题

冷却速度过快对焙烧块造成什么影响?

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