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【单选题】
( )是指二进制码元在数据传输系统中传输出错的概率。A.
调制速率
B.
比特率
C.
数据传输速率
D.
误码率
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反馈参考答案：
举一反三
【简答题】upon receipt of
【判断题】在三条导线构成的单结点导线网中,ABC为已知点,M为结点,各分支路线分别计算M点坐标为M1(1157.233,844.779),M2(1157.225,844.788),M3(1157.239,844.774)各分支导线长度分别为S1=1.15km,S2=1.82km,S3=1.99km,则结点M坐标的最或然值为M(l157.235,844.778)。
A.
正确
B.
错误
【简答题】c____ n.[sing.,U] agreement among all the people involved 一致同意
【简答题】Упражнение 9. Прочитайте и переведите следующие предложения на китайский язык. 1.Нет двух одина́ковых изб во всём селе́, как нет в нём двух одина́ковых лиц. 2.Он ведёт себя́, как бу́дто ничего́ не слу...
【简答题】N. [ usually sing. ] a difficult or unpleasant experience
【判断题】Sight credits mean that the issuing bank effects payment or negotiation immediately upon receipt of the drafts and/or other documents that are in conformity with the credit stipulations.( )
A.
正确
B.
错误
【单选题】We will send you quotations and samples _____your specific enquiry. A as soon as receiving B after receipt C on reception of D upon receipt of
A.
as soon as receiving
B.
after receipt
C.
on reception of
D.
upon receipt of
【简答题】Quotations and sample books will be airmailed to you upon receipt of your specific enquiry.
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