更多“根据事物历史和现实的资料,探索事物发展和变化的规律,从而推测”相关的问题
4.试简单说明下列协议的作用:IP、ARP、RARP 和 ICMP。
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B细胞膜上有()和(),称为膜表面Ig,是B细胞的抗原受体,肥大细胞膜上具有()Fc受体。
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下列市场环境调查内容中,属于经济环境调查内容的是()。
\tA.经济发展政策
\tB.经济发展状况
\tC.价格政策
\tD.税收政策
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重铬酸钾K2Cr2O7在酸性溶液中被l mol的Fe2+还原为Cr3+时,所需K2Cr2O7的量 ( )。
A . 3molB . 1/3 molC . 1/6 molD . 6 mol
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磁性材料的带基要求为能经受拉伸及()。
A . 摩擦
B . 耐热
C . 耐湿
D . 不变型
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身上刺有花绣纹样的好汉是()
A.九纹龙史进
B.玉麒麟卢俊义
C.浪子燕青
D.花和尚鲁智深
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对危险化学品单位进行安全检查,应()。
A.突出重点 B.抓住要害 C.全面深入 D.尽可能做到系统、完整
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信托收据额度可用于在建设银行办理()
A. 开立不掌握物权的即期信用证
B. 打包贷款
C. 开立远期信用证
D. 提单背书
E. 提货担保
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据统计,家长每天吸烟十支以上的家庭的儿童,比不吸烟的家庭的儿童平均矮0.65厘米。 由此可推测:
A.儿童被动吸烟,会影响到身体的生长发育
B.儿童的身高取决于家长是否有抽烟的习惯
C.抽烟较凶的家长,缺乏对孩子足够的关爱,严重影响到儿童的成长
D.家长抽烟,会给孩子带来示范作用,孩子偷偷抽烟,因而影响到长个子
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外界物体在视网膜上成()的像。
A.倒立、缩小、实像B.正立、缩小、实像C.倒立、放大、实像D.倒立、缩小、虚像
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下列香料烟等级身份薄的为()。
A.K2
B.A2
C.K3
D.ND
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Text All over the world, forests are safeguarding the health of the planet itself. They do this (26) protecting the soil, providing water and (27) the climate. Trees (28) soil to mountainsides. Hills (29) the trees have been felled lose 500 times as (30) soil a year as those with trees. Trees catch and (31) rainwater. Their leaves break the impact (32) the rains, robbing them of (32) destructive power. The roots of trees allow the water to go into the soil, (34) gradually releases it to flow down rivers and refill ground-water reserves. Where there are no (35) , the rains run in sheets of water off the land, (36) the soil with there Land (37) with trees and other plants (38) 20 times more rainwater than (39) earth. As they grow, trees absorb carbon dioxide, the main (40) of the "greenhouse effect", which (41) irreversibly to change the world’s climate. Together, the world’s trees, plants and soils contain three times as much carbon as (42) is in the atmosphere. The world’s forests (43) the vast majority of its animal and plant species. The tropical rainforests (44) have well over half of them, (45) they cover only about 6% of the Earth’s land surface.
A.itsB.theseC.thoseD.their
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腑会()
A.太渊
B.大杼
C.绝骨
D.中脘
E.膈俞
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