比例尺和比例尺精度之间关系如何?

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问题:

比例尺和比例尺精度之间关系如何?

考点:测绘科学技术工程测量学工程测量学题库
题型:问答题 简答题

某地区对用户用电推出两种收费办法,供用户选择使用:一是按固定电价收取;二是按分时电价收取------在固定电价的基础上,平时时段电价每千瓦时上浮0.03元;低谷时段电价每千瓦时下浮0.25元。若一用户某月平时时段用电140千瓦时,低谷时段用电60千瓦时,则相对于固定电价收费该月[ ]

A、付电费10.8元

B、少付电费10.8元

C、少付电费15元

D、多付电费4.2元

题型:问答题 简答题

阅读理解。

     More teachers are starting off the school year with letters to parents and students to introduce themselves

and set a tone (基调) for the year. The letters are a good way to start positive communication with parents,

several teachers told Education World.

     "I think it's professional," said Dorothy Peselli, an English teacher at Sparta High School in Sparta, New

Jersay, Peselli, who gives out the letters the first day of school, told Education World. "It gives parents an

image of you as a professional. If you start communication off in a positive manner, you will have the parents

on your side when you need them."

     In her letter to parents, Peselli encourages them to call or e-mail her with specific concerns about their

children. "I want to work as a team to make sure that your child becomes an independent lifelong learner,"

Peselli wrote to parents last September. She also telephones the parents of all her students at the beginning

of the year.

     Peselli includes with the letter a classroom handbook (手册) listing plans and rules. And she requires

that both parents and students read and sign statements (included in the letter) when they read the handbook.

The student letter also lists needed supplies and gives encouragement. "Please come to class ready to work

and learn. This will be an exciting year for all of us," it says.

     Last year, Peselli taught at a different high school and parents there were "shocked", but appreciative,

that she had so much contact with them. "I received roses and a thank-you note from one boy and his

mother," Peselli said. She wished her own children's teachers would take the time to write notes as well.

"I never got a letter home from any of my daughter's high school teachers." she said,"It would be nice to

know the background of some of the people who are teaching my daughter."

1. We may learn from the text that ______.

A. most teachers are writing letters to parents and students

B. the handbook is used to list supplies and give encouragement

C. Peselli believe it important for teachers to exchange information with parents

D. Peselli mainly introduces her background and teaching experiences in the letters

2. The underlined word"it" in the fourth paragraph refers to _____.

A. the handbook

B. the requirement

C. the school

D. the letter

3. We can infer from the last paragraph that ______.

A. parents were satisfied with Peselli's way of working

B. Peselli means to surprise parents by writing students

C. Peselli seemed to be popular among boy students

D. all Peselli's children are studying in high schools

4. The purpose of the text is to ______.

A. introduce an English teaching method

B. give advice on how to teach students

C. encourage teachers to keep in touch with parents

D. show us how Dorothy Peselli makes teaching plans

题型:问答题 简答题

慢性支气管炎的缓解期,时间应是()

A.1个月以内

B.1个月以上

C.2个月以内

D.2个月以上

E.3个月以内

题型:问答题 简答题

在夹具中,用较长锥度芯轴来作工件上圆锥孔的定位元件时,它可以限制工件的()自由度。

A.两个

B.三个

C.四个

D.五个

E.六个

题型:问答题 简答题

甲状舌管囊肿及瘘管()。

A.与甲状舌管的胚胎发育异常有关

B.与第1、第2鳃弓发育异常有关

C.与第2鳃弓发育异常有关

D.与淋巴组织发育异常有关

E.与血管组织发育异常有关

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