首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The texture of the soil depends on the relative amounts of different-sized particles that combine to make up the soil. These par
The texture of the soil depends on the relative amounts of different-sized particles that combine to make up the soil. These par
admin
2013-01-15
62
问题
The texture of the soil depends on the relative amounts of different-sized particles that combine to make up the soil. These particles can be as large as stone and gravel or as small as clay.
A typical clay soil is composed of approximately 60 percent actual clay, 20 percent silt, and 20 percent sand. The particles in a sandy soil are so fine that it tends to be compact and interferes with the oxygen supply for plant roots. Water has trouble entering this impervious soil, and runoff is very common during rainfalls.
A typical light sandy soil is composed of approximately 70 percent sand, 20 percent silt, and 10 percent clay. The particles in a sandy soil are comparatively large, permitting water to enter the soil and to pass through it so quickly that it often carries nutrients with it and dries out very rapidly. The texture of sandy soils is generally very difficult to modify because huge amounts of organic material must be added.
A typical loam soil is composed of approximately 40 percent sand, 40 percent silt, and 20 percent clay, making it an ideal garden soil. It is easily worked and retains water and nutrients, which fire slowly absorbed by plant roots.
A typical adobe soil is a clay soil present in hot, dry areas of the country and is often very hard and cracked. It has all the disadvantages of a heavy clay soil and, being much drier, is more difficult to correct.
Adobe soil differs from other clay soils in that ______.
选项
A、other clay soils retain less water
B、other clay soils have smaller particles
C、adobe soil has had organic material added to it
D、adobe soil is found mostly in dry climates
答案
D
解析
制土砖的土多见于干燥的气候。第五段的第一句话正是表达这个意思。
转载请注明原文地址:https://kaotiyun.com/show/rK9O777K
0
考博英语
相关试题推荐
They______themselves______thepoliticianbecausetheyhopedhewouldbecomepresidentoneday.Atlasthedid.
Oneofthemanytheoriesaboutalcoholismisthelearningandreinforcementtheory,whichexplainsalcoholismbyconsideringalc
Oneofthemanytheoriesaboutalcoholismisthelearningandreinforcementtheory,whichexplainsalcoholismbyconsideringalc
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,
Anothercommon______aboutolderpeopleisthattheyaretoooldtolearnnewskills.
Colorisveryimportanttomostanimalsforithelpsthemtogetalongintheworld.Color【21】tomakeananimaldifficultforit
Colorisveryimportanttomostanimalsforithelpsthemtogetalongintheworld.Color【21】tomakeananimaldifficultforit
Colorisveryimportanttomostanimalsforithelpsthemtogetalongintheworld.Color【21】tomakeananimaldifficultforit
随机试题
A、腹内斜肌,腹横肌的弓状下缘B、腹股沟韧带和腔隙韧带C、腹外斜肌腱膜D、腹膜、腹横筋膜和联合肌腱E、腹内斜肌和联合肌健构成腹股沟管的后壁_______;
在井下爆破器材库附近爆破时,应遵守()规定。
在施工现场,检查发现电动机受潮、绝缘电阻达不到要求时,应做干燥处理,干燥处理的方法有()。
期货交易的交割,由()统一组织进行。
B注册会计师负责对K公司2印9年度财务报表进行审计。在测试K公司内部控制时,B注册会计师遇到下列事项,请代为做出正确的专业判断。B注册会计师在确定某项控制的测试范围时通常考虑下列因素()。
单位有人反映吃了食堂的东西后身体不舒服,假如你是食堂负责人,此时该怎么办?
有西方学者研究发现,美国大多数教师出身于中产阶级,习惯用中产阶级的价值观作为奖惩的标准,即不合乎他们的要求就要受到处罚。这实质上是教师在利用教育对文化进行()
长天汽车制造公司的研究人员发现,轿车的减震系统越“硬”驾驶人员越是在驾驶中感到刺激。因此,他们建议长天汽车制造公司把所有的新产品的减震系统都设计得更“硬”一些,以提高产品的销量。下面哪一项如果为真,最能削弱该研究人员的建议?()
1919年5月爆发的五四运动具备了哪些新的历史特点,使之成为中国革命的新阶段即成为新民主主义革命阶段的开端的()
JDK中提供的文档生成器是( )。
最新回复
(
0
)