酚二磺酸分光光度法测定水中硝酸盐氮时,在水样蒸干后,加入酚二磺酸试剂,充分研磨使硝化

题型:判断题

问题:

酚二磺酸分光光度法测定水中硝酸盐氮时,在水样蒸干后,加入酚二磺酸试剂,充分研磨使硝化反应完全。

考点:环境监测上岗考试环境监测上岗考试题库
题型:判断题

A girl complained to her father about her hard life.She didn't know what she had to do and wanted to give up.She felt tired of fighting and fighting.One problem had been finished but another came over.

Her father,a cook,took her into the kitchen.He poured water into three pans and boiled(煮沸) them.After boiling,in the first pan was put some carrots,the second was put some eggs and the last was put with coffee.

The girl waited impatiently (不耐烦的),confused by what her father did.About 20 minutes later,her father took out the carrots and put them in a bowl.He took the eggs and put them in a bowl.After that the coffee was poured into a cup.“My sweet heart,what do you see?” he asked.

“Carrots,eggs and coffee,” she replied.

Her father told her to close her eyes and asked her to touch the carrots.She did so and felt that the carrots were soft.After that he asked her to take the eggs and break them.After peeling (剥开) them,she got the eggs,cooked and hard.The last,the father let her smell the coffee. She asked,“What did you do this for,Father?” He explained that each had the same unlucky experience—the boiling water,but each had a different result. The strong and hard carrots had become soft and weak.The fragile eggs became hard after being cooked. The coffee was very special,they could change water.“Who are you?” asked her father.“When bad luck knocks at your door,what is your decision? Are you carrots,eggs or coffee?”

小题1:The girl complained about her hard life because she didn't ________.

A.want to give up

B.finish one problem

C.know what to do

D.get tired of fighting小题2:The girl's father took her to the kitchen to ________.

A.ask her how to boil eggs

B.show her how to make coffee

C.teach her how to be a cook

D.tell her how to face difficulties小题3:After about twenty minutes,the carrots became ________.

A.soft

B.hard

C.salty

D.sweet小题4:The underlined word “fragile” in the passage means “________”.

A.美味的

B.易碎的

C.特别的

D.可怜的小题5:What can we learn from the passage?

A.The girl's father liked to eat some kinds of food.

B.Bad luck always knocks at strong people's doors.

C.Boiled carrots,eggs and coffee had the same result.

D.People should make right decisions when in trouble.

题型:判断题

患者,女性,54岁,出现头面部、颈部浮肿3个月,呼吸困难1个月。查体胸部瘀血,静脉曲张。胸片示右肺肿物,纵隔淋巴结肿大。经肺活检证实小细胞肺癌。

常用有效的化疗方案为()

A.CAP

B.MVP

C.EP

D.VIP

E.TP

题型:判断题

使用显微镜高倍镜观察液体标本,正确的说法是()

A.应加盖玻片

B.不加盖玻片

C.可加可不加

D.找到视野后加盖玻片

E.将高倍镜物镜头移到标本片上,再加盖玻片

题型:判断题

《中国药典》规定,测定维生素B1注射剂的含量方法是()

A.三点校正的紫外分光光度法

B.气相色谱法

C.高效液相色谱法

D.碘量法

E.紫外分光光度法

题型:判断题

合并遥信虽然在调控主站端以单个遥信形式显示,但在厂站端则是由多个遥信计算合并而成。

更多题库