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现有0.05 mol·kg-1萘的苯溶液，0.05 mol·kg-1尿素的水溶液，0.05 mol·kg-1氯化钙的水溶液，它们的凝固点是否相同?请说明原因。

A.05
B.05
C.05

【参考答案】

根据式△Tf=KfbB，Tf=T......

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逆反应的活化能在数值上等于正反应的活化能，只不过符号相反而已。
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Stiletto heels could be banned from the workplace because of health and safety reasons, according to British Trade Union bosses.The Trade Union Congress, predominantly male, has proposed a motion arguing that high heels are disrespectful to women while they also contribute to long term injuries. They propose instead that women wear sensible shoes with an inch heel limit in an attempt to avoid future foot and back pain as well as injuries. The motion is due to be debated at next months conferencE.The motion states: Congress believes high heels may look glamorous on the Hollywood catwalks but are completely inappropriate for the day-to-day working environment. Feet bear the main burden of daily life, and for many workers prolonged standing, badly fitted footwear, and in particular high heels can be a hazarD.Around two million days a year are lost through sickness as a result of lower limb disorders. Wearing high heels can cause long-term foot problems and also serious foot, knee and back pain and damaged joints. Many employers in the retail sector force women workers to wear high heels as part of their dress codE. More must be done to raise awareness of this problem so that women workers and their feet are protecteD. Nadine Dorries, the Tory Member of Parliament, however criticised the motion and said the extra height heels give women can help them when in the workplacE. Im 5ft 3in and need every inch of my Christian Louboutin heels to look my male colleagues in the eye, she saiD. If high heels were banned in Westminster, no one would be able to find mE.The Trade Union leaders need to get real, stop using obvious sexist tactics(手段)by discussing womens stilettos to divert tension away from Labour chaos. Michelle Dewberry, a former winner of The Apprentice, said the motion was patronising(自认为高人一等的). This is absolutely ridiculous and I think these union officials should be spending their time dealing with more important issues , she saiD. Im at work in five-inch heels and perfectly able to do my joB.Heels are sexy, they boost your confidence and they are empowering to women. I cant imagine these officials debating a motion about how tightly men should wear their ties. Wearing heels is a personal choicE. According to the passage, stiletto heels refer to______.A.heels most appropriate for catwalksB.shoes that fit retail sector workers bestC.heels within the limit of an inchD.very high heels that women wear
A."
B."
C."
According
D.
A.heels
E.shoes
F.heels
G.very
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