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【简答题】
定义在R上的函数f（x）的值域是（0，2）则g（x）=f（x﹣2007）﹣1的值域为（ ）。
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举一反三
【单选题】Which of the following statements about the statistics of pet ownership in the US is wrong?
A.
It's estimated that 78 million dogs & 85.8 million cats are owned in the United States. ～44% of all households in the United States have a dog, & 35% have a cat, according to American Pet Products Association (APPA).
B.
APPA reports that 64% of dogs are purchased from breeders, while 23% of dogs & 31% of cats are obtained from an animal shelter or humane society.
C.
～6.5 million companion animals enter US animal shelters nationwide every year. Of those, ～3.3 million are dogs and 3.2 million are cats.
D.
Each year, ～1.5 million shelter animals are euthanized (670,000 dogs & 860,000 cats). ～3.2 million shelter animals are adopted per year (1.6 million dogs & 1.6 million cats).
【单选题】Pet ownership can create feelings of being needed and a sense of purpose for those who may be feeling ____ aside.
A.
flung
B.
tossed
C.
threw
D.
cast
【简答题】随时间作周期交替变化的应力称为 。
【简答题】随时间作周期替变化的应力称为___,作用在构件上随时间作周期性变化的载荷称为___。
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