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【单选题】
The company that I work at has a ______________ to increase its sales without increasing its costs.A.
sequence
B.
comments
C.
outcome
D.
scheme
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【单选题】抛物线 在点 处的切线方程与法线方程为
A.
切线方程: ;法线方程为: ;
B.
切线方程: ;法线方程为: ;
C.
切线方程: ;法线方程为: ;
D.
切线方程: ;法线方程为: ;
【简答题】Complete each of the following statements with words or phrases from the passage. 1) The passage tells us that ____________ is an essential element of American culture and Americans are _________ for ...
【简答题】2 Complete each of the following statements with words or phrases from the passage. 1) The passage tells us that _____1_______ is an essential element of American culture and Americans are ____2_____ ...
【简答题】已知抛物线 , (a)求抛物线在点 处的切线方程与法线方程; (b)抛物线上哪一点处的切线平行于直线 .
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【单选题】抛物线 在点 处的切线方程与法线方程为
A.
切线方程: ;法线方程为: ;
B.
切线方程: ;法线方程为: ;
C.
切线方程: ;法线方程为: ;
D.
切线方程: ;法线方程为: ;