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【单选题】
下列关于象原函数和反函数的说法错误的是( )A.
反函数的定义域是象原函数的值域
B.
反函数的值域是象原函数的定义域
C.
所有函数都有反函数
D.
象原函数和它的反函数的图像关于直线y=x对称
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皮皮学刷刷变学霸
举一反三
【单选题】在一定温度下,将 150mL,100kPa的氢气与75mL,45kPa的氧气装入250mL的真空瓶,则氢气和氧气的分压分别为( )
A.
13.5 kPa, 27 kPa
B.
27 kPa, 60 kPa
C.
60 kPa, 145 kPa
D.
60 kPa, 13.5 kPa
【判断题】判断题 (认为下列观点为 Facts 请选择 正确; 认为下列观点为 opinions 请选择 错误) 6. More people stopped smoking than last year ago.
A.
正确
B.
错误
【多选题】IV. Why did people stop using paper money for a long time? (There may be more than one correct answer. )
A.
Paper money was stopped being used because of the poor conditions of economy.
B.
People stopped to use other things because paper money was easier to carry around.
C.
People stopped using paper money because of the inflation.
D.
The Chinese stopped using paper money because of Marco Polo.
E.
The Europeans stopped using paper money because Marco Polo died. 【要求】多选题,请在答案框中填写对应的大写字母(不加点、不空格),如:ABC
【简答题】.They’re looking for a(n) (experience )_______manager to improve the overseas business. With the (introduce)______of the Internet, more and more people preferred to shop online. (unfortunate)______ yo...
【简答题】More and more Chinese people care for their own health. I come from England. I came to China five years ago. I began to learn cooking Chinese food from my father. When I was fif, I began to help m...
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