通信系统的同步数字传输统称()。A、PDHB、SDHC、PSDHD、SPDH

题型:单项选择题

问题:

通信系统的同步数字传输统称()。

A、PDH

B、SDH

C、PSDH

D、SPDH

考点:公路工程监理工程师公路监理工程师机电工程公路监理工程师机电工程题库
题型:单项选择题

若一元二次方程x2+2x-1=0,则2x2+4x值为(    )。

题型:单项选择题

关于货币型数据的说明,正确的是( )。

A.货币型数据有时可以表示成整型数据

B.货币型数据与浮点型数据完全一样

C.货币型数据是由数字和小数点组成的字符串

D.货币型数据是小数点位置固定的实型数

题型:单项选择题

When someone says, "Well, I guess I’ll have to go to face the music", it does not mean he is planning to go to a concert. It is something far less pleasant, like being called in by your boss to explain why you did this or that, and why you did not do this or that. Sour(剌耳的; 拙劣的)music, indeed, but it has to be faced.

The phrase “to face the music” is familiar to every American, young and old. It is at least 100 years old. Where did the expression come from?

The first information comes from the American writer James Fennimore Cooper. He said in 1851 that the expression was first used by actors while waiting in the wings to go on stage. After they got their cue(提示,暗示) to go on, they often said, "It’s time to go to face the music." And that is exactly what they did--- face the orchestra (管弦乐队) which was just below the stage.

An actor might be frightened or nervous as he moved on to the stage in front of the audience that might be friendly or perhaps unfriendly especially if he forgot his lines. But he had to go out. So, “to face the music" came to mean having to go through something, no matter how unpleasant the experience might be, because you knew you had no choice.

The other explanation comes from the army. Men had to face inspection(视察)by their leader. The soldiers worried about how well they looked. Was their equipment clean--shiny enough to pass inspection? Still, the men had to go out, and face the music of the band, as well as the inspection. What else could they do?

小题1:According to the passage, the word “music" means________.

A.your boss’s criticism(批评)

B.your leader’s inspection

C.something unpleasant to be experienced

D.sour pop music小题2:The phrase ‘to face the music" was first used by _______.

A.all the Americans

B.the American writer James Fennimore cooper

C.some American actors

D.the American orchestra小题3:An actor might feel frightened or nervous when going on stage. One of the reasons is that ______.

A.his performance was not good at all

B.he might not remember what he should say on stage

C.he had to face the unfriendly audience

D.most of the audience might be his friends小题4:to face the music" is also used to mean that soldiers were not willing _______.

A.to be examined about their equipment

B.to be found weak

C.to show themselves up in public

D.to be inspected by their leader小题5:The passage is mainly about_______.

A.the meaning of the phrase ‘to face the music"

B.how to deal with something unpleasant

C.how to learn English phrase

D.how to go through difficulty

题型:单项选择题

通过招投标方式选定中标人的,其合同价是由( )决定的。

A.招标控制价
B.基准价
C.中标价
D.评标价

题型:单项选择题

来源于骨组织的恶性肿瘤命名为()。来源于血管的良性肿瘤命名为()。来源于鳞状细胞的恶性肿瘤命名为()。

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