问题
单项选择题 B1型题
荧光染料应有较高的（）
A.量子产额和消光系数
B.吸收
C.波长差
D.标记染色
E.荧光信号
答案
参考答案：A
解析：荧光染料对488nm激发光波长有强的吸收。
搜题请搜索小程序“爱下问搜题”
荧光染料应有较高的（）
A.量子产额和消光系数
B.吸收
C.波长差
D.标记染色
E.荧光信号
参考答案：A
解析：荧光染料对488nm激发光波长有强的吸收。
| 从方框内选出恰当的单词完成句子。 | |
2. Wang Hong, this is _____ pencil case. Here you are. 3. Where is _____ new ring?I can't find it. 4. Peter is a boy. Mr Zhang is _____ math teacher. 5. Excuse me! _____ this your backpack? 6. — _____ you Nancy? —Yes, I am. 7. This is _____ old watch. 8. I _____ an English girl. 9. —_____ is that in English? —It's a watch. 10. —_____ do you spell "computer"? —C-O-M-P-U-T-E-R. |