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【单选题】
如果x与y商品是互补品,x价格下降,将使y的()
A.
需求量增加
B.
需求增加
C.
需求量减少
D.
需求减少
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参考答案:
举一反三
【判断题】反应的熵变为正值,该反应一定是自发进行。
A.
正确
B.
错误
【简答题】A.She was seriously ill and there was no treatment in the town. B.She became critically ill and Dr. Howard Kelly came to her house to help her. C.She was ill and she thought of the boy she helped year...
【判断题】反应的熵变为正值,该反应一定是自发进行。
A.
正确
B.
错误
【单选题】“These are the times that try men’s souls”, these words were once read to Washington’s troops and did much to shore up the spirits of the revolutionary soldiers. Who is the author of these words?
A.
Benjamin Franklin
B.
Thomas Jefferson
C.
Thomas Paine
D.
George Washington
【单选题】George Washington’s dental surgery is mentioned to______.
A.
[A] show his primitive medical practice in the past.
B.
[B] demonstrate the cruelty of slavery in his day.
C.
[C] stress the role of slaves in the U.S. history.
D.
[D] reveal some unknow aspect of his life.
【单选题】不属糖分解代谢产物检测的生化反应是
A.
糖发酵试验
B.
VP试验
C.
甲基红试验
D.
枸橼酸盐利用试验
E.
吲哚试验
【单选题】She was afraid _____ the dog in case it became dangerous .
A.
of exciting
B.
to excite
C.
that she excited
D.
to be exciting
【单选题】It’s George Washington’s saying: “Wars are fought with weapons, but they are won by men.”
A.
T
B.
F
【单选题】“These are the times that try men’s souls”, these words were read to George Washington’s troops and did much to shore up the spirits of the revolutionary soldiers. Who is the author of these words?
A.
Benjamin Franklin
B.
Thomas Jefferson
C.
Thomas Paine
D.
George Washington
【判断题】如果约束方程中含有不等式,则称为单侧约束。
A.
正确
B.
错误
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