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【单选题】
生态系统的成分包括生产者、消费者、分解者及非生物的物质和能量。下列关于生态系统成分的叙述,正确的是 ( )A.
动物于消费者，其中食草动物属于第二营养级
B.
细菌都属于分解者，其异化作用类型主要是需氧型和厌氧型
C.
生产者属于自养型生物，是生态系统中最基本、最关键的生物成分
D.
一种生物只能属于生态系统中的一种生物成分
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举一反三
【判断题】Web,即全球广域网,也称为万维网,它是一种基于超文本和HTTP的,全球性的、动态交互的、跨平台的分布式图形信息系统。是建立在Internet上的一种网络服务,为浏览者在Internet上查找和浏览信息提供了图形化的、易于访问的直观界面。()
A.
正确
B.
错误
【单选题】The first English permanent settlement in North America was established in today's ____ in the year of ______.
A.
Virginia; 1620
B.
Plymouth; 1620
C.
Virginia; 1607
D.
Plymouth; 1607
【简答题】某企业2018年年末购入一项固定资产,初始入账价值为600万元。该项固定资产使用年限为5年,预计净残值为0,企业采用年数总和法计提折旧。2019年年末,由于产品发生较大更新,企业预计该固定资产的可收回金额为390万元。税法规定该类(由于技术进步、产品更新换代较快的)固定资产采用加速折旧法计提的折旧可予税前扣除,该企业在计税时采用双倍余额递减法计提折旧,使用年限与净残值与会计处理一致。则2019年该...
【判断题】The first permanent settlement in North America was established in today's Massachusetts in 1607.
A.
正确
B.
错误
【单选题】The Vikings have left many traces of their settlement which are still visible today. Archaeology provides physical evidence of their conquests, settlement and daily life. The study of place names and ...
A.
limited written sources
B.
physical archaeological evidence
C.
report on DAN analysis
D.
the study of place names and language
【单选题】听力原文： Today, I would like to begin by discussing early European settlement along one of our well-known rivers, the Hudson, which empties into the Atlantic to form. New York Bay. The Hudson River has a...
A.
The strength of its shipbuilding industry.
B.
The physical features of the river itself.
C.
The abundance of fruit, vegetables, and livestock.
D.
The similarity of climate to that in Europe.
【简答题】the first permanent settlement in North America was established in today's ____ in the year of ____.
【简答题】The first permanent settlement in North America was established in today’s ______ in the year of 1607.
【简答题】The first permanent settlement in North America was established in today's _________ state.
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