在差示扫描量热法的分析过程中
A．样品的质量与参比物质的质量相同
B．样品的温度与参比物质的温度相同
C．样品吸收的热量与参比物质吸收的热量相同
D．样品的熔点与参比物质的熔点相同
E．不需要参比物质
参考答案：B
解析： 本题考查差示扫描量热法的相关知识。 差示扫描量热法是测量维持样品与参比物质的温度相同，系统所需输给待测物质和参比物质的能量差随温度变化的热分析技术。故答案为B。注：新版《应试指南》对DSC未涉及。
根据短文内容，从下框A--F选项中选出能概括每段主题的最佳选项，并把答案填涂在答题卡的相应位置上。填涂选项中有一项为多余项。特别提示: 如果选E, 则同时填涂AB; 如果选F, 则同时填涂CD.
As awareness of the benefits of humour increases, most of us want to get all the laughs we can. It seems that almost every day there is another new discovery about the power of humour to help us physically, mentally, emotionally, and spiritually. Every system of the body responds to laughter in some important or positive way . 小题2:________________. Many people mistakenly believe that we are born with a sense of humour. They think that when it comes to a sense of humour. “either you have got it or you don  't .” This is false! What is true, however, is that the ability to laugh and smile is actually something we are born with. For example, we laugh when we are tickled under the arm, even without thinking about how to react.小题3:_______________. The parts of the brain and central nervous system that control laughing and smiling are mature at birth in human infants, but that is not the same thing as having a sense of humour. (After all, when a baby laughs in his small bed we don’t rush over and say, “That kid has a great sense of humour!”)  Your sense of humour is something you can develop over a lifetime. Don’t be nervous before others and try to laugh at yourself-then you will make them laugh too.小题4:_______________. Humour includes a lot more than laughing and joke telling. Many people worry needlessly that they do not have a good sense of humour because they are not good joke tellers. More than jokes, a sense of humour requires being willing and able to see the funny side of life’s situations as they happen. In fact, one of the best definitions（定义）of a sense of humour is “the ability to see the non-serious element  in a situation.”小题5:_____________. There may be a thousand different ways to express your sense of humour, but joke telling is only one of those ways. As more is discovered about how humour benefits our life, more people will be able to see and enjoy the humour when they are in a difficult situation. Life depends on air, food and water, but it is made easier to live with a good sense of humour. |