The engineer began to work the____ he arrived at the factory.

第1题

The bridge began to ___ under the heavy snow.

A.crash

B.break in

C.destroy

D.give

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第2题

The first European settlement on the continent began in（).

A.1901

B.1788

C.1770

D.1787

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第3题

When making modern cameras , people began to_______ plastics for metal.

A.surround

B.substance

C.stretch

D.substitute

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第4题

_________, Edison began experimenting with some thing which he had made himself.

A.OnAugust12,1877

B.InAugust12,1877

C.At12August,1877

D.In1877,August,12

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第5题

Hardly （)home when it began to rain.

A、had I got

B、I had got

C、had I arrived in

D、I had arrived at

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第6题

函数1，t，t^2，t^3在任何区间都是线性相关的。()

函数1，t，t^2，t^3在任何区间都是线性相关的。（)

A.错误

B.正确

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第7题

可靠度R(t)与不可靠度F(t)之间的关系通常是()。

可靠度R（t)与不可靠度F（t)之间的关系通常是（)。

A.R(t)·F(t)=1

B.R(t)+F(t)=1

C.R(t)-F(t)=1

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第8题

记并行时间为T，串行时间为T'，处理器数量为p，并行效率E的定义是____。

A.T'-T

B.T'/T

C.T'/pT

D.pT-T'

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第9题

You must have visited him last week,____?

You must have visited him last week,____？

A.mustn't you

B.didn't you

C.did you

D.do you

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第10题

Don't ____ his tricks.

A.fall out

B.fall into

C.fall in

D.fall for

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第11题

国家标准GB/T 1800.2-1998规定,标准公差分成16级。T、对

国家标准GB/T 1800.2-1998规定,标准公差分成16级。

T、对

F、错

正确答案:F

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