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【判断题】
全球大气系统年平均净辐射小于零A.
正确
B.
错误
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【简答题】函数y= 2 x-1 中自变量x的取值范围是______；函数y= 2x-4 中自变量x的取值范围是______．
【单选题】Why does cream go bad faster than butter? Some researchers think they have the answer, and it comes down to the structure of the food, not its chemical composition--a finding that could help rid some ...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butter
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
【单选题】Why does Maria go into the mobile ice-cream business?
A.
To preserve a tradition.
B.
To amuse her daughter.
C.
To help local education.
D.
To make some extra money.
【简答题】函数y= 中自变量x的取值范围是
【简答题】函数y= 中自变量x的取值范围是
【简答题】函数 y= 2 x-2 中自变量x的取值范围是______，函数 y= 2x-3 中自变量x的取值范围是______．
【简答题】目前我国采用的复式记账法是（ ）。
【简答题】函数 y= 3 x-4 中自变量x的取值范围是______，函数 y= 3x-9 中自变量x的取值范围是______．
【单选题】Why does cream go bad faster than butter? Some researchers think they found the answer, and it comes down to the structure of the food,not its chemical composition--a finding that could help rid some ...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butter
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
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