燃气的平均分子量为燃气的()与燃气的摩尔数之比。A、单位数量 B、总质量 C、烟气量

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问题:

燃气的平均分子量为燃气的()与燃气的摩尔数之比。

A、单位数量

B、总质量

C、烟气量

D、容积

考点:燃气具安装维修工考试燃气具安装维修工考试题库
题型:单项选择题

Dear friends,

My name is Tony. I am English. I am twelve years old this year. I am tall, and I am good at playing football. I am in Grade Seven. There are thirty boys and twenty girls in my class. We are learning Chinese in our school. Our Chinese teacher is Mr. Wu. He is a little short, but he is very strong. He is very nice to us. I have some good friends in my class. Tom is a tall boy with short black hair. He is good at playing football, too. Alice is short and she loves wearing red dresses. She is good at English. Mary has long hair. She can speak Japanese and she likes swimming. We all study hard.

What about your school and your friends? Please write soon.

Yours,

Tony

小题1:Which country is Tony from?

A.America

B.England

C.China

D.Australia小题2:Who is Mr. Wu?

A.He is Tony’s English teacher.

B.He is Tony’s father.

C.He is Tony’s Chinese teacher.

D.He is Tony’s friend.小题3:How many students are there in Tony’s class?

A.20.

B.30.

C.52.

D.50.小题4:Who likes swimming?

A.Tom.

B.Alice.

C.Mary.

D.Mr. Wu.小题5:Who writes this letter?

A.Tony.

B.Tom.

C.Mary.

D.Alice.

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在0.1mol/L HAc溶液中加入NaAc固体后,HAc的电离度 __________ ,PH值 __________ ,电离常数 __________ 。

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有关假性失弛缓症的叙述错误的是()

A.常见于胃癌浸润

B.X线检查食管体部有扩张

C.测压和X线检查均无蠕动波

D.食管镜通过顺利

E.常需活检才能确诊

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包括弹丸式注射显像剂后的动态血流、早期血池和骨显像的检查,常称为()。

A.全身骨显像

B.局部骨显像

C.断层骨显像

D.三时相骨显像

E.四时相骨显像

题型:单项选择题

用户机构是指金融信用信息基础库的各类用户所在机构()

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