帕克认为生物学规则同样适合于城市结构分析,理由是什么?

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问题:

帕克认为生物学规则同样适合于城市结构分析,理由是什么?

考点:应用社会学城市社会学城市社会学题库
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The Best of Alaska

Nothing evokes(唤起) Alaska like a whale exploding out of the water or an eagle pulling a silver fish from the river.Combine these images with high mountains,brilliant icebergs and wonderful meals and you really do have the Best of Alaska!

Join us for an unforgettable 7­day excursion(远足) to the last frontier!Additional highlights include:a scenic flight over Glacier Bay National Park,a rafting trip through the heart of the Chilkat Bald Eagle Preserve,historic Skagway,a whale watching cruise and the company of knowledgeable local guides.

HIGHLIGHTS:

JUNEAU:Juneau,the state capital,is rich in culture and scenic beauty.It is here that we start and end our trip.

HAINES:Haines is a small community located along the fiords(峡湾).The natural beauty and expansive wilderness found here have made Haines a premier center for adventure in Alaska.In 2004,Haines was listed by Outside Magazine and National Geographic Adventure as one of the best places for recreation and living.The activities listed below are located in Haines.

ALASKA INDIAN ARTS:Alaska Indian Arts is a nonprofit corporation dedicated to the preservation and continuation of traditional native craft and culture of the Northwest Native Tribes.Alaska Indian Arts is also the headquarters for several of Alaska’s outstanding craftsmen and artisans.We spend a few hours learning carving,native beading(串珠饰) and culture from these master artists.

SKAGWAY:Skagway is famous for its role in the Klondike Gold Stampede over 100 years ago.Today,it is a historic yet lively town,which still reflects its gold rush roots and contains colourful shops.In Skagway,we stop by the Klondike Gold Rush National Park Visitor’s Center and ride the White Pass Yukon Route Railway.

GUSTAVUS:Gustavus is the gateway to the Glacier Bay National Park.We’ll stay at a comfortable lodge here for two nights.This will be the base for both the whale­watching excursion and a full day cruise in Glacier Bay.

DATES/PRICES:

May 16,June 20,July 18,August 15.

7 days—$3,500,including lodging,all meals,excursions,guides,park fees,sales taxes,and transportation between Juneau,Skagway,Haines,and Gustavus.Not included:alcohol,personal items,airfare to and from Juneau.

CONTACTS:

E­mail:info@alaskamountainguides.com

Call:(800)766­3396

Write:Alaska Mountain Guides & Climbing School

P.O.Box 1081,Haines AK 99827

小题1:You can feel the history of the local place at ______.

A.Juneau

B.Skagway

C.Haines

D.Gustavus小题2:You can watch a whale exploding out of the water at ________.

A.the Glacier Bay National Park

B.the Klondike Gold Rush National Park

C.the White Pass Yukon

D.the Northwest Native Tribes小题3:According to the advertisement,the participants of the excursion ________.

A.will spend one day experiencing the local culture at Alaska Indian Arts

B.can contact Alaska Mountain Guides & Climbing School by e­mail or fax

C.are able to experience some adventurous activities in Haines

D.can get lots of traditional native artworks free of charge小题4:Which of the following requires participants to pay additional fees?

A.Going from Gustavus to Juneau by train.

B.A full day cruise in Glacier Bay.

C.Having the last supper at Juneau.

D.Flying from Juneau to their hometowns.

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降水量

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进行四格表卡方检验时,用矫正公式的是()

A.总观察例数小于40

B.总观察例数大于40

C.有任何一个格子理论数小于1

D.有任何一个格子理论数小于5但是大于1

E.总观察例数大于100

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设甲、乙、丙三种产品的产量分别为x,y,z(吨)时生产这三种产品的总成本函数为C(x,y,z)=2x+y+2z+30(万元),出售这三种产品的价格分别为P1=18-x(万元/吨),P2=25-2y(万元/吨)与P3=12-z(万元/吨)。

若限制这三种产品的总产量为16吨,厂家为取得最大利润应分别生产这三种产品各多少吨

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