下列事实与氢键有关的是(   ) A.水结成冰体积膨胀,密度变小 

下列事实与氢键有关的是(  

A.水结成冰体积膨胀,密度变小   B.水加热到很高的温度都难以分解

CCH4SiH4GeH4SnH4的熔点随相对分子质量的增大而升高

DHFHClHBrHI的热稳定性依次减弱

答案

A

相关题目

在下列四幅图中,经纬度位置相同的两点是     A.①和②
在下列四幅图中,经纬度位置相同的两点是     A.①和②       B.②和③  C.③和④   D.①和④
________, Nathan gave back the enormous amount of money he found.       A. T
________, Nathan gave back the enormous amount of money he found.       A. To his sorrow    B. To his joy   C. To his surprise   D. To his credit
将点P(7,0)按向量a平移,得到A′(11,5),则a等于(  
将点P(7,0)按向量a平移,得到A′(11,5),则a等于(    )A.(2,5)             B.(4,3)           C.(4,5)              D.
填入下面横线处的句子,与上下文衔接最恰当的一组是(3分
填入下面横线处的句子,与上下文衔接最恰当的一组是(3分) 庐山避暑胜地,果然名不虚传。今天天气晴朗,我凭窗远眺,但见远处正       在凝
(满分8分,每小题4分)(1)计算:          (2)解
(满分8分,每小题4分)(1)计算:          (2)解方程:
截止到2009年10月25日,重庆市公安机关累计破获各类刑事案件
截止到2009年10月25日,重庆市公安机关累计破获各类刑事案件2328起,涉及58种罪名,其中侦破故意杀人案24件;抓获涉案人员2915人,刑事拘留384人,逮捕
Dear Tom, How is it going? My family and I are exciting to hear that you will c
Dear Tom, How is it going? My family and I are exciting to hear that you will come to China to spend the Chinese New Year’s Eve. And I am glad to tell you the arrangements during your visit in adv
Educating girls quite possibly provides a higher rate of return than any other i
Educating girls quite possibly provides a higher rate of return than any other investment(投资)in the developing world. Women’s education may be an unusual field for economists(经济学家)

最新题目