关于普通平板玻璃特性的说法，正确的是()。
A.热稳定性好
B.热稳定性差
C.防火性能较好
D.抗拉强度高于抗压强度
参考答案：B
解析：普通平板玻璃的特性：(1)良好的透视、透光性能；(2)隔声、有一定的保温性能。抗拉强度远小于抗压强度，是典型的脆性材料；(3)有较高的化学稳定性；(4)热稳定性较差，急冷急热，易发生炸裂。 考点 建筑装饰装修材料的特性与应用
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| Everyone likes to receive gifts. In many countries people give gifts for special occasions. For example, in the United States people give 1 for birthdays, weddings, and when someone graduates from high school or college. In Japan many people give gifts at special times in the summer and 2 . And in some countries people give a person a gift when they visit the person's home. But how do you choose the 3 gift? It's not always easy to find a great gift for everyone, especially when you are buying a gift for someone from another 4 . In many Western countries watches and 5 are nice gifts. However, Chinese people do not like clocks as gifts. The Chinese words that mean to give a clock are similar to the words for to die. So many Chinese people think that a clock as a gift is bad 6 . Many people around the world think that flowers are always a safe gift. But even flowers can be 7 ! In Russia a gift of an odd number of flowers (1,3,5, etc. ) is okay. But a gift of an even number of flowers (2,4, 6, etc. ) is not okay. It's only for funerals! People in China do not like gifts of white flowers, because white is the color for funerals. And don't 8 red roses to a stranger from Germany. They may think you love them! Red roses mean love in several cultures! | |||
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