在自然环境中,种群分布格局一般可分为随机分布、集群分布、()和散式分布四种类型。

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问题:

在自然环境中,种群分布格局一般可分为随机分布、集群分布、()和散式分布四种类型。

考点:生态学城市生态学城市生态学题库
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类风湿性关节炎的基本病理改变是()

A.血管炎

B.软骨以及软骨下组织病变

C.关节滑膜炎

D.筋膜炎

E.骨关节炎

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按照索赔的目的,下列属于工程索赔的是( )。

A.工期索赔

B.合同中明示的索赔

C.合同中默示的索赔

D.工程变更索赔

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Selection to participate in a top executive-education program is an important rung on the ladder to top corporate jobs. U. S. corporations (1) billions of dollars in this form of management development -- and use it to (2) and train fast-track managers. Yet one (3) of executive education found that less than 5% of the managers (4) to these high-profile programs are women -- and minorities are terribly (5) as well.

The numbers are (6) . In regular business (7) usually paid for by the participant, not an employer -- there are plenty of women and minorities. Women, for example, (8) for about 30% of MBA candidates. Yet in the (9) programs paid for by corporations that round out a manager’s credentials at a (10) career point, usually at age 40 or 45, companies are making only a (11) investment in developing female and minority executives. A case (12) point: Only about 30% of the 180 executives in Stanford’s recent (13) management program were women.

Most companies say these days they are (14) hiring and promoting women and minorities-- and there are some (15) trends in overall employment and pay levels so why are companies (16) the ball when it (17) executive education The schools (18) that they are neither the cause of nor the cure for the problem. A Harvard Business School dean figures that companies are (19) of sending their female executives (20) they don’t want to lose them to competitors.

4()

A.delivered

B.transported

C.transmitted

D.sent

题型:填空题

“细胞来源于细胞”这一观点是由()提出的。

A.RobertHooke

B.Virchow

C.Ruska

D.Hertwig

E.Schwann

题型:填空题

涂印膜层太薄,固化后其平滑度()。

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