改造某公路投资8 600万元,改造后预计每年净收益均为1 200万元,期望收益率14

题型:问答题

问题:

改造某公路投资8 600万元,改造后预计每年净收益均为1 200万元,期望收益率14%,该路可使用15年(不考虑残值)。 (1)用净现值法评价该项目。 (2)以12%作为基准收益率,用内部收益率法评价该项目。

考点:公路工程监理工程师经济系列(公路工程经济)公路工程经济
题型:问答题

物流服务的可替代性,对物流企业来说,方便其在不同运输方式中进行选择,提高其运输形式的灵活性。

题型:问答题
使二次根式
x-1
有意义的x的取值范围是(  )
A.x=1B.x≠1C.x>1D.x≥1,
题型:问答题

如图所示,摆球在竖直平面内摆动,每次上升的最大高度逐渐减小.关于摆球的能量转化,下列说法中正确的是(    )

A.上升过程中,机械能增大

B.上升过程中,内能减小

C.下降过程中,机械能增大

D.下降过程中,内能增大

题型:问答题

不属于洞口土体加固主要方法的是()。

A.SMW法

B.注浆法

C.高压喷射搅拌法

D.冻结法

题型:问答题

Part 1


·Read thefollowingpassage, eight sentences have been removed from the article.
·Choose from the sentences A-H the one whichfits each gap.
·For each gap (1-8) mark one letter (A-H) on the Answer Sheet.
·Do not mark any letter twice.
The single, decisive factor that made it possible for mankind to settle in permanent communities was agriculture. (1) Once people could control the production of food and be assured of a reliable annual supple of it, their lives changed completely.
Fanning was a revolutionary discovery. (2) With more food available, more people could be fed. Populations therefore increased. The growing number of people available for more kinds of work led to the development of more complex social structures. (3)
Farming the world over has always relied upon a dependable water supply. For the earliest societies this meant rivers and streams or regular rainfall. (4) Later communities were able to develop by taking advantage of the rainy seasons.
All of the ancient civilizations probably developed in much the same way, in spite of regional and climatic differences. (5) Heavier pottery replaced animal-skin gourds as containers for food and liquids. Cloth could be woven from wool and flax. Permanent structures made of wood, brick, and stone could be erected.
The science of mathematics was an early outgrowth of agriculture. People studied the movements of the moon, the sun, and planets to calculate seasons. (6) With a calendar it was possible to calculate the arrival of each growing season. Measurement of land areas was necessary if property was to be a factor in farming and housekeeping. (7) All of the major ancient civilizations in Mesopotamia, Egypt, the Indus Valley, and China emerged in the 4th millennium BC. Historians still debate over which one emerged first. It may well have been the Middle East, in an area called the Fertile Crescent. This region stretches from the Nile River in Egypt northward along the coast of former Palestine, then eastward into Asia to include Mesopotami
  • a. (8) This kind of larming depended on the reproduction of seed, normally from grain crops.A. It not only made settlements possible and ultimately the building of cities but it also made available a reliable food supply.B. Later came measures of value as commodity and money exchange became common.C. In this area people settled along the riverbanks and practiced field agriculture.D. After farming was developed in the Middle East in about 6500 BC, people living in tribes or family units did not have to be on the move continually searching for food or herding their animals.E. As villages grew, the accumulation of more numerous and substantial goods became possible.F. With a food surplus, a community could support a variety of workers who were not farmers.G. The first great civilizations grow up along rivers.H. In doing so they created the first calendars.

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