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【判断题】
衡量数字通信系统性能的主要指标是有效性和可靠性两项指标。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Which of the following examples is given to show that the program sometimes does not go according to plan?
A.
Libby Purves had an argument with Nigel Lawson.
B.
Someone hit himself on the head with a spanner.
C.
Someone leapfrogged pillar boxes in the street.
D.
A doctor declined to answer the set questions.
【简答题】设f(x)在区间[－a，a](a＞0)上具有二阶连续导数，f(0)＝0． (1)写出f(x)的带拉格朗日余项的一阶麦克劳林公式； (2)证明在[－a，a]上至少存在一点η，使 a3f'(η)＝3∫－aaf(x)dx．
【单选题】—The charity show is really wonderful. —Yes. I think it’s ________ great success.
A.
/
B.
a
C.
the
D.
an
【简答题】设f(x)在[0，1]上具有二阶连续导数，证明：对任意的 ，有
【单选题】The fashion show came to ______ end at 5:00 pm, and it was ________ great success.
A.
the ; a
B.
an ; a
C.
an ; the
D.
the; /
【简答题】设f(x)在区间[-a，a](a＞0)上具有二阶连续导数，f(0)=0 (1)写出f(x)的带拉格朗日余项的一阶马克劳林公式 (2)证明在[-a，a]上至少存在一点η，使 a^3*f(η)=3∫f(x)dx.
【单选题】—The charity show is really wonderful. —Yes. I think it’s ________ great success.
A.
/
B.
a
C.
the
D.
An
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