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(附加题)下图为村综合发展生态工程示意图。请据图回答下列问题: (1)这一生态工程主要遵循的工程原理是_________。 (2)沼气池在这一生态工程中起着非常重要的作用,具体有__________。(请列举两点) (3)围绕这一生态系统,以下说法错误的是____________。 A.在该生态系统中的成分是生产者 B.该生态系统在资源有限的条件下,解决了人多地少的矛盾,提高农民生活水平,这符合整体性原理 C.该生态系统能提高各营养级之间的能量传递效率,实现了物质的循环利用 D.该生态系统增加了,使生态系统的抵抗力稳定性得到提高 (4)若下图是某科研工作者为该村设计的垃圾资源化、无害化处理的一种方案,请据图回答问题: a.此方案中①②过程需每一位居民的参与,参与的行动方式是__________; b.过程④⑤利用的生物属于生态系统的何种成分?__________________; c.从对资源的充分利用角度看,④⑤途径比③途径突出的优点是____________。
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举一反三
【单选题】(2013·青岛一模)You seem to have a ready­made answer ________ I ask you a question.
A.
whenever
B.
whatever
C.
whichever
D.
whoever
【单选题】加工中心与普通数控机床的区别在于()
A.
有刀库和自动换刀装置
B.
转速
C.
机床的刚性好
D.
进给速度高
【单选题】加工中心与普通数控机床的区别在于( )。
A.
有刀库与自动换刀装置
B.
转速高
C.
机床刚度好
D.
进给速度高
【单选题】听力原文:M: You seem to know your way around the campus. Have you been here long? W: I'm a senior literature major. I'll be graduating next June. M: Your major is literature? Mine is, too. But I'm just be...
A.
She's a senior.
B.
She's a junior.
C.
She's transfer student.
D.
She's graduate student.
【单选题】听力原文:W: Edward Allsop, you seem to have had two consuming passions in your life, music and politics. Am I right? M: Yes. I think it's very important that leaders should have a wide variety of interest...
A.
A violinist.
B.
A pianist.
C.
a musician.
D.
a politician.
【单选题】加工中心与普通数控机床区别在于()
A.
有刀库和自动换刀装置
B.
转速
C.
机床的刚性好
D.
进给速度高
【单选题】加工中心与普通数控机床区别在于_
A.
有刀库与自动换刀装置
B.
转速
C.
机床的刚性好
D.
进给速度高
【单选题】加工中心与普通数控机床区别在于()
A.
有刀库和自动换刀装置
B.
转速
C.
机床的刚性好
D.
给速度高
【单选题】W: You seem to have a lot of work at your office. You've always been staying late and working overtime. M:______
A.
What you say is right. But don't you know the meaning of work?
B.
Yes. That's true. But don't you know the common saying:' Always work and no play makes Jack a dull boy'?
C.
That's true, but it's no bother to me. The work is interesting and fun. I don't mind the extra hours at all.
D.
Sorry. I cannot listen to your advice. Overwork can bring me overpay, you know.
【单选题】加工中心与普通数控机床的区别在于 ( ).
A.
有刀库与自动换刀装置
B.
转速高
C.
机床刚性好
D.
进给速度高
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