论述氢气中微量氧分析使用最广泛的“吸收法”原理,并说明其常用的碱性溶液及其化学性质是

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问题:

论述氢气中微量氧分析使用最广泛的“吸收法”原理,并说明其常用的碱性溶液及其化学性质是什么?

考点:电机氢冷值班员考试初级电机氢冷值班员初级电机氢冷值班员题库
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阅读理解。

     Sigmund Freud was a world-famous doctor of Vienna (维也纳). He was also a man full of humour

(幽默). Once, at his 70th birthday party, a friend asked Freud if he could put his work into several words.

"Well," said Freud,"we take the sick out of their trouble and return them to the common suffering."

     As a devoted (忠实的) son, Freud often visited his old mother. His mother usually spent her summers in

a small mountain town in Austria (奥地利). The King Josef usually spent his summers there, too. One day in

the summer, a band (乐队) was playing a lively tune (曲子) when Freud's mother was sitting at the window

and watching the people singing and dancing on Main Street. The old woman had a poor memory. She heard

the band playing, but forgot it was the King's birthday. Freud was visiting his mother on her 95th birthday. He

told his mother,"Mama, the band is playing for your birthday." She believed him and had a wonderful day.

1. Freud was a famous of ________.

A. doctor, Austria

B. general, Vienna

C. King, Austria

D. doctor, Australia

2. One day Freud came to the small mountain town for ________.

A. his 70th birthday

B. the King Josef's birthday

C. his mother's birthday

D. his holiday

3. Freud's mother felt very happy on her 95th birthday because ________.

A. the King Josef himself came to celebrate (庆贺) her birthday

B. the people of the town came out to celebrate her birthday

C. she believed that the band was playing for her birthday

D. she heard the band playing a lively tune so wonderfully

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一个不透明的盒子里装有5个黄球,2个红球,2个白球,除颜色不同外其余都相同,从中任意摸出一球是黄球的概率为______.

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下列实验操作与所选择的仪器正确的是(  )

A.盛装固体药品--细口瓶

B.取用食盐固体--药匙

C.吸取少量液体--试管

D.少量液体反应--量筒

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下列关于投资项目财务分析中利息备付率和偿债备付率两个指标的表述,正确的是( )。

A.利息备付率是在借款偿还期内的利润总额与当年应付利息的比值

B.对于债务人和债权人来说,利息备付率和偿债备付率都是越大越好

C.一般认为偿债备付率至少应该大于2

D.偿债备付率表示偿还债务本息的保证倍率

题型:问答题 论述题

要约人从自身利益考虑希望使要约撤销,合同法规定,撤销要约的通知( )。

A.应在要约到达对方之前到达受要约人
B.应在对方发出承诺之前到达受要约人
C.应在对方承诺到达要约人之前到达受要约人
D.不受时间限制

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