首页/ 题库 / [判断题]物种在群落中空间、时间和营养关系方面所占的答案

物种在群落中空间、时间和营养关系方面所占的地位是城市生态系统的生态位原理。( )

判断题
2021-09-01 23:24
A、正确
B、错误
查看答案

正确答案
A

试题解析

感兴趣题目
A salvor may be()the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.
The () is used for hauling in or letting out the wires or ropes.
Vessels must be()valid certificate of nationality or certificated of registry or license.
When loading or discharging dry mud or cement,crew members should use goggles and().
Effects which are dutiable or subject to prohibitions or restrictions should be declared in ().
The()may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.
()are liable to be stoten, pilfered or may damaged due to improper handing or stowage.
Banks have no liability for any delay or loss caused by postal or telex failure.
逻辑运算符(AND、NOT、OR)的运算顺序是AND→OR→NOT。
正是基于不同物种间相生相克的循环链条,大千世界才能维持生态平衡,才得以丰富多彩。可有一些物种,一旦使引进地的生物多样性和生态环境遭到破坏。因此,在引进物种时,一定要对其生态安全性做全面的评估,防患才能维持生态平衡,这一事实蕴含的哲理是()。
20世纪中期以前的生态学认为,自然界中存在某种“顶级生态系统”。由于进化和生物适应性等原因,在特定环境中,某些物种总能取得优势地位,进而建立起由其主导的生态体系,达到生态平衡。如特定树种的组合总是主导着某一类型的森林,即便雷电引发大规模山火,摧毁这片森林,随着时间推移,该森林总能恢复到山火前的那种状态。但在过去数十年间,对自然过程混沌性日渐深入的理解,已取代了这种静态、机械的生态系统观。这段文字接下来最可能讲的是(    )。
逻辑运算符(AND、NOT、OR)的运算顺序是AND→OR→NOT。
相关题目
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

简述森林群落的垂直结构,并说明其生态意义?
物种在群落中空间、时间和营养关系方面所占的地位是城市生态系统的生态位原理。( )
Logistic回归系数与优势比OR的关系为()。
当系统显示出错信息:Bad command or file name时,应从()方面进行检查。
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
Owners are to be responsible for loss of or damage to the goods or delay in delivery of the goods only in case the loss,damage or delay has been caused by the improper or negligent stowage of the goods.This means that().
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
翻译:With Average or With Particular Average(WA or WPA)()
生态系统多样性:生态系统多样性是指生物群落和生境类型的多样性。主要有森林生态系统、草原生态系统、荒漠生态系统、农田生态系统、湿地生态系统和海洋生态系统等。
()shall be liable for loss of and damage to the Vessel and/or goods arising or resulting from inaccuracies in stating the description,quantity,weight,measurement or contents.
Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo,without the authorization or privity of the Shipowner or his agent,is().
(), or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.
广告位招租WX:84302438

免费的网站请分享给朋友吧