
关于原子吸收分光光度法测定条件的选择,以下正确的是()
\tA.在保证稳定和合适光强输出的情况下,尽量选用较低的灯电流
\tB.使用较宽的狭缝宽度
\tC.尽量提高原子化温度
\tD.调整燃烧器的高度,使测量光束从基态原子浓度最大的火焰区通过


\tA.在保证稳定和合适光强输出的情况下,尽量选用较低的灯电流
\tB.使用较宽的狭缝宽度
\tC.尽量提高原子化温度
\tD.调整燃烧器的高度,使测量光束从基态原子浓度最大的火焰区通过
Fill in each blank of the following sentences with one of the words or phrases in the box. Make changes when necessary.
observe fade formidable experiment obsession capitalize on approach rake up apply aggressive
1. Today' executives are hungry, competitive and ______.
2. Jack's ______ with personal cleanliness annoys everyone.
3. He is trying to ______ people's discontent with the government to carry out reforms.
4. In his book, he ______ that the president was an able statesman.
5. Meeting the energy demands of a big city is a ______ task.
6. As a writer, she takes a completely new ______ to the classic horror story.
7. In some special situations, this rule does not ______.
8. Scientists are ______ with the new drug in order to fight this disease.
9. The sound of the motorbike ______ in the distance.
10. Street cleaners ______ the fallen leaves and burn them.