判断题

当事人双方签订合同后，要遵照执行，任何情况下不得撤销。（　）

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North China’s Tianjin Municipality（直辖市）has started a “Blue Sky Project” to control the air pollution. Under the project requirements，the air quality in Tianjin is expected to measure up to the national standard by 2007，when two thirds of days in the year will enjoy fairly good or excellent air quality. In order to achieve the goal，Tianjin will take a series of measures such as controlling the use of coal，reducing the dust floating from construction sites，planting trees along the major streets，and replacing petrol with liquid natural gas as the fuel for vehicles. Since people paid little attention to the environmental protection，the air quality in Tianjin has worsened during the past decade. The project has received wide praise and support from the natives. The newly-discovered “Great Wall” in south China’s Hunan Province will open to visitors in the near future. “We will try to make it an internationally famous attraction for tourists” ,said Yuan Xinhua，director of the Hunan Provincial Tourism Administration（管理局）. The main part of the l90km“Southern China Great Wall” is located in Fenghuang County in western Hunan. Built during the Ming Dynasty（1368--1644）by the local Miao minority people，the Southern China Great Wall is 2.3m high and 1.7m wide.The Chinese have been enjoying themselves by sightseeing or traveling during the Spring Festival this year rather than engaging in the traditional gathering of relatives and friends at home. In the past five days，over 200，000 Beijingers spent the one-week Spring Festival holiday shopping in Tianjin low prices of consumer（消费）goods and the convenient railway service enable Beijingers to visit the neighboring city during the day. Meanwhile unlike previous years，an increasing number of Tianjiners went to Beijing during the ?Spring Festival to visit places of interest in the capital. Tourism had been heating up in the last few years.An increase in income and longer holidays have made it possible for Chinese to relax after a year of work. [中国工商银行真题]f “Blue Sky Project” is completed，（）.

A.therewillbenoairpollutioninTianjin
B.thenativescanenjoygoodairqualitymostoftheyear
C.liquidnaturalgaswillhavetakentheplaceofcoalandpetrol
D.peoplewillpaylessattentiontoenvironmentalprotection

判断题

某工程项目遇上二十年一遇的特殊恶劣天气，致使工程项目无法正常进行、且造成铰大窝工现象，承包方可以由此不可抗力向业主提出工期索赔并附带费用索赔。（）

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