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【单选题】
在所有首项系数为１的n次多项式中，首项系数为１的n次( )在[-1,1]上与零的平方逼近误差最小。A.
切比雪夫多项式
B.
勒让德多项式
C.
拉盖尔多项式
D.
埃尔米特多项式
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反馈参考答案：
举一反三
【单选题】The specialist is______.
A.
a man whose job is to train other people
B.
a man who has been trained in more than one field
C.
a man who can see the forest rather that the trees
D.
a man whose concern is mainly with technical or professional matters
【单选题】Why is Song Jian always nervous when he speaks English?
A.
He does not know the grammar
B.
He can not find a good topic
C.
He sometimes make mistakes
【简答题】经理亲自出马参加面试。 (in person)
【简答题】经理亲自出马参加面试。 A. The manager took part in the interview. B. The boss took part in the interview in person. C. The secretary took part in the interview in person. D. The manager took part in the intervie...
【简答题】汉译英:经理亲自出马参加面试
【单选题】The man is not sure if they got the letter but he thinks so .
A.
they got the letter
B.
the man is not sure
C.
the man is not sure if they got the letter
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