题目内容
工程施工合同按照合同计价方式和风险分担情况可划分为固定总价合同、固定单价合同、可调价格合同、成本加酬金合同。其中（）计价方式容易发生争议。
查看答案
搜索结果不匹配？点我反馈
更多问题
在下面功能评价程序的示意图(图 2)中，各框中排列正确的是()。
根据《城市用地分类与规划建设用地标准》，下列表述不正确的是（）。
In earlier researches on the newborn’s perception, scientists ________.
Passage Three：Questions 31 to 35 are based on the following passage.Priscilla Ouchida’s “energy-efficient” house turned out to be a horrible dream. When she and her engineer husband married a few years ago, they built a $100,000, three-bedroom home in California. Tightly sealed to prevent air leaks, the house was equipped with small double-paned (双层玻璃的) windows and several other energy-saving features. Problems began as soon as the couple moved in, however. Priscilla’s eyes burned. Her throat was constantly dry. She suffered from headaches and could hardly sleep. It was as though she had suddenly developed a strange illness.
Experts finally traced the cause of her illness. The level of formaldehyde (甲醛) gas in her kitchen was twice the maximum allowed by federal standards for chemical workers. The source of the gas？ Her new kitchen cabinets and wall-to-wall carpeting.
The Ouchidas are victims of indoor air pollution, which is not given sufficient attention partly because of the nation’s drive to save energy. The problem itself isn’t new. “The indoor environment was dirty long before energy conservation came along,” says Moschandreas, a pollution scientist at Geomet Technologies in Maryland. “Energy conservation has tended to accentuate the situation in some cases.”
The problem appears to be more troublesome in newly constructed homes rather than old ones. Back in the days when energy was cheap, home builders didn’t worry much about unsealed cracks. Because of such leaks, the air in an average home was replaced by fresh outdoor air about once an hour. As a result, the pollutants generated in most households seldom build up to dangerous levels.
第31题：It can be learned from the passage that the Ouchidas house ________.
微信支付 
支付宝支付