如图甲、乙表示小肠绒毛上皮细胞中的细胞膜对不同物质的转运(每种物质转运的方向由箭头表

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问题:

如图甲、乙表示小肠绒毛上皮细胞中的细胞膜对不同物质的转运(每种物质转运的方向由箭头表明,黑点的数量代表每种物质的浓度)。下列叙述正确的是()

 

A.a物质可能是氧气,b物质可能是葡萄糖

B.a物质可能是水,b物质可能是甘油

C.a物质可能是胆固醇,b物质可能是氧气

D.a物质可能是葡萄糖,b物质可能是氨基酸

考点:高中生物物质进出细胞的方式物质进出细胞的方式题库
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术后声音嘶哑

A.甲状腺危象
B.喉返神经损伤
C.喉上神经内支损伤
D.喉上神经外支损伤
E.术后呼吸困难和窒息

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属于非细胞结构的微生物是( )。

A.细菌

B.真菌

C.病毒

D.衣原体

E.螺旋体

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泵出口压力过高你如何处理?

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形体训练的特点有:群众性、针对性、多样性、灵活性、()。

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The potential of computers for increasing the control of organizations or society over their members and for invading the privacy of those members has caused considerable concern.
The privacy issue has been raised most insistently with respect to the creation and maintenance of data files that assemble information about persons from a multitude of sources. Files of this kind would be highly valuable for many kinds of economic and social research, but they are bought at too high a price if they endanger human freedom or seriously enhance the opportunities of blackmailers. (2) While such dangers should not be ignored, it should be noted that the lack of comprehensive data files has never before been the limiting barrier to the suppression of human freedom.
Making the computer the villain in the invasion of privacy or encroachment on civil liberties simply diverts attention from the real dangers. Computer data banks can and must be given the highest degree of protection from abuse. (3) But we must be careful, also, that we do not employ such crude methods of protection as to deprive our society of important data it needs to understand its own social processes and to analyze its problems.
Perhaps the most important question of all about the computer is what it has done and will do to man’s view of himself and his place in the universe. (4) The most heated attacks on the computer are not focused on its possible economic effects, its presumed destruction of job satisfaction, or its threat to privacy and liberty, but upon the claim that it causes people to be viewed, and to view themselves, as ’machines’.
What the computer and the progress in artificial intelligence challenge is an ethic that rests on man’s apartness from the rest of nature. An alternative ethic, of course, views man as a part of nature, governed by natural law, subject to the forces of gravity and the demands of his body. (5) The debate about artificial intelligence and the simulation of man’s thinking is, in considerable part, a confrontation of these two views of man’s place in the universe.

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