计算题:配制水泥:粘土:水为1:0.5:6的水泥粘土浆400L,已知水泥的密度为3.

题型:问答题 简答题

问题:

计算题:配制水泥:粘土:水为1:0.5:6的水泥粘土浆400L,已知水泥的密度为3.1g/cm3,粘土的密度为2.76g/cm3,求各种材料的用量各是多少?

考点:钻探灌浆工高级钻探灌浆工高级钻探灌浆工题库
题型:问答题 简答题

下列属于绩效诊断的内容是()。

A.企业绩效管理制度以及管理体系的诊断

B.对企业组织的诊断

C.对企业考评指标和标准体系的诊断

D.对考评者与被考评者的全面全过程的诊断

E.对收集信息与资料积累方面的诊断

题型:问答题 简答题

-55起逐次加上1,得到一连串的数:-54,-53,-52,……,

(1)第100个整数是什么?       (2)求这100个整数的和。

题型:问答题 简答题

下列铸造支架组成部分中属于大连接体的是()

A.后腭杆

B.前腭杆

C.唇连接杆

D.舌板

E.网状连接体

题型:问答题 简答题

在铁路旅客运输中,旅客携带物品免费重量的情形有()。

A.成人携带20公斤物品

B.小孩携带20公斤物品

C.成人携带30公斤物品

D.小孩携带10公斤物品

题型:问答题 简答题

The United States has about 475,000 school buses ---all painted yellow.Each day they carry more than 25,000,000 children, half of all schoolchildren in the country.But these buses, on average, use four liters of diesel (柴油) fuel to travel less than sixteen kilometers.When the school year began last fall, diesel averaged 55 cents a liter nationally.The price nearly doubled, to a dollar and 8 cents, by the end of school in June.

Bob Riley speaks for the American School Bus Council.He says fuel prices for schools are not much lower than others have to pay.As a result, schools are looking for ways to reduce transportation costs.Bus routes are being redrawn or, in some cases, canceled (取消).Some areas are buying buses that use natural gas or other alternative fuels.Other steps include fewer field trips and less travel by sports teams.And some school districts (地区) may end any bus service not required by law.

Studies show that school buses are the safest form of transportation to and from school.The American School Bus Council says cuts in bus service are bad for children and possibly the environment.It says removing buses from the road will mean an increase in other vehicles transporting students.Spokesman Bob Riley says another concern is that reducing bus services might reduce attendance.

But it could also get more children to walk or bicycle to school.And that would surely make people happy at the National Center for Safe Routes to School.More kids walking or biking safely to school is the aim of a three-year-old federal program, part of an international movement.The goal is to increase physical activity and reduce air pollution.The United States will celebrate Walk to School Day on October the eighth this year.But for some students, high fuel prices could make every day a walk-to-school day.

小题1:What does this passage mainly tell us?

A.High fuel prices’ influences on school buses.

B.New measures to transport school students.

C.The safest form of student transportation.

D.The origin of Walk to School Day.小题2:Which of the following information is implied in the first paragraph?

A.There are too many school buses in the United States.

B.There are too many students in the US.

C.Diesel prices are going up too rapidly in the US.

D.School buses consume too much diesel in the US.小题3:What can we learn from Paragraph 3?

A.Cuts in bus service will have negative results.

B.The US government is encouraging cuts in bus services.

C.The US schools are searching for the safest transportation means.

D.Reducing bus service will do a lot of good to the environment.小题4:The National Center for Safe Routes to school encourages more children to walk or bike to school in order to ____.

A.save more fuels and diesel for the country

B.keep the children safe on their way to school

D.keep the children healthy and the environment clean.

更多题库