正确

错误

陈寅恪

内藤湖南

川胜义雄

顾颉刚

by

simply

alone

made

In some cases

voices

response

duration

lasting

range K. reproduced L. kind M. sounds N. within O. However The warming of the Earth observed over the last 100 years is due to a combination of many factors. Warming due to the increase in greenhouse gases _______ (1) has been the determining factor so far. _______ (2), projections of greenhouse warming do not rest on recent observations; they come from scientific understanding of the climate system. A _______ (3) of simple and complex computer models has been used over the last 30 years to put together knowledge of many climate processes. Contrary to some scientific opinion, current models do a reasonable job of simulating today’s climate. The difference between summer and winter temperatures, in _______ (4) to change in heating from the Sun, is correctly simulated to _______ (5) about 0.5 degrees over much of the planet. Natural events provide additional tests of our understanding. For example, the scale and _______ (6) of cooling due to the eruption of Mt. Pinatubo were _______ (7) by climate models. When greenhouse gases are increased in climate models, the response is always an increase in average temperatures and water vapor. Models vary in their results but, in virtually all cases, doubling the amount of carbon dioxide increases global average temperatures _______ (8) between 1.5 Celsius Degrees and 4 Celsius Degrees. Why are there some dissenting _______ (9) heard on the science of climate change? _______ (10) it appears that critics are simply unaware of the depth of the science developed so far. Others are concerned because we do not understand everything about the climate system.

Base

Year n+2

Between periods one and two

Year 4

开放性问题

封闭性问题

开放性问题和封闭性问题

创造性问题

水、采暖管道与市政管道界限以水表井为界，无水表井者，以与市政管道碰头点为界 ；

给水管道安装项目中，均包括水压试验及水冲洗工作内容，如需消毒，执行本册第八章的相应项目 ；

消火栓管道安装执行第十册《给排水、采暖、燃气工程》的相应定额；

水灭火系统 钢管（法兰连接）定额中包括管件及法兰安装，但管件、法兰数量应按设计图纸用量另行计算 。

正确

错误

正确

错误