测定某样品含量时,如果吸收度超过0.9,该数据能否直接用于计算?

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问题:

测定某样品含量时,如果吸收度超过0.9,该数据能否直接用于计算?

考点:执业西药师药物分析药物分析题库
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在日常充电中要定期检查透气阀性能,如有();();();(),应立即更换。

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I moved to the small, busy town of Edison in New Jersey six years ago. It was during the second term of my fifth grade. My parents got new jobs and higher income, so they decided it was time to move from Woodbridge to a better, more educational town.

In the US, it is unnecessary to take a test to get into a “good” middle or high school. You just attend the school close to where you live. So, many parents will think about the quality of the local school when they decide to buy a new house. My parents did the same. We finally chose Edison mainly because of the high quality of its school.

In New Jersey, an area with a good school usually means a concentration of Asian people. There are about 300 students in our school. 55% are Asians and just under half of that are Chinese. There are so many Chinese people nearby that we even have our own Chinese school.

Edison is an old town, just like thousands of others in the United States. However, I have treated it as my hometown. That’s where I spend much of my youth, and the memories there can’t be moved anywhere else.

小题1:Why did the writer’s parents move to Edison?

A.Because they were born there.

B.Because it was a better educational town.

C.Because the writer began his fifth grade.

D.Because the writer didn’t need to take a test.小题2:How many students are from Asia in the writer’s school?

A.About 80.

B.About 160.

C.About 220.

D.About 300.小题3:What does the underlined expression “a concentration of” mean in Paragraph 3?

A.None of.

B.The whole of

C.A large number of

D.A small number of小题4:Why can’t the writer forget Edison?

A.Because he regards it as his hometown.

B.Because his parents got new jobs there.

C.Because there are many Asians there.

D.Because it is in the state of New Jersey.

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压力控制阀主要包括()。

A.减压阀

B.顺序阀

C.溢流阀

D.安全阀

E.节流阀

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()一般具有一定的经济积累,同时有一定的风险承受能力。

A、学生客户

B、老年客户

C、年轻客户

D、中年客户

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心脏与大血管后前位摄片图像左侧缘自上而下对应的解剖结构是()

A.主动脉结节、肺动脉段、左心室

B.肺动脉段、主动脉结节、右心室

C.主动脉结节、肺动脉段、右心室

D.主动脉结节、左心房、左心室

E.上腔静脉、肺动脉段、左心室

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