问题
单项选择题
某试液用1cm比色皿测得透光率为T，若用2cm比色皿测量时，透光率会发生（）变化
A.增加
B.不变
C.降低1/2
D.减小
E.提高1倍
答案
参考答案：D
解析：透光率的负对数符合朗伯比尔定律。
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某试液用1cm比色皿测得透光率为T，若用2cm比色皿测量时，透光率会发生（）变化
A.增加
B.不变
C.降低1/2
D.减小
E.提高1倍
参考答案：D
解析：透光率的负对数符合朗伯比尔定律。
| 从方框中选词填空。 | |
2. Justin has a computer game. He likes to ______ computer games. 3.—______ play basketball.—That ______ interesting. 4. I have a baseball ______. I like to play baseball. 5. My grandmother ______ a TV in her room. She ______ TV every day. 6. My friend has a great sports ______. He has all kinds balls in his room. |