UDP数据报中长度字段______。 A.只记录UDP首部的长度,以16位为一个计算

题型:单项选择题

问题:

UDP数据报中长度字段______。

A.只记录UDP首部的长度,以16位为一个计算单位
B.只记录UDP首部的长度,以32位为一个计算单位
C.只记录UDP数据部分的长度,以32位为一个计算单位
D.记录包括UDP首部和数据部分的长度,以8位为一个计算单位

考点:计算机软件水平考试高级网络规划设计师网络规划设计师
题型:单项选择题

用浆液灌入岩体裂隙中以提高岩体的整体性和抗变形能力的灌浆称为( )灌浆。

A.接缝

B.固结

C.接触

D.回填

题型:单项选择题

如图为心脏结构图,据图回答:

(1)心脏主要由______构成,分为四个腔A______B______C______D______其中心肌最发达的是[______]______.

(2)在A与C中,流动脉血的心腔是[______]______,a与b中,流静脉血的血管是[______]______.

(3)图中属于静脉的有[______]______、[______]______和[______]______.

(4)血液在心脏与血管里只能按一定方向流动,是因为图中f房室瓣只能向______开;e动脉瓣只能向______开,使血液不能倒流.

(5)肺循环开始于图中______,终止于图中______.(填代号)

题型:单项选择题

第二部分:语言知识及运用(共两节,满分35分)

第一节:完形填空(共10小题;每小题2分, 满分20分)      

阅读下面短文,从各题所给的四个选项A、B、C、D中选出最佳选项。

The guitar is one of the oldest instruments known to man. It   21   originated in the vicinity of (在……附近) China. There were guitars in ancient Egypt and Greece as well, but the   22   history of the guitar started in Spain in the 13th century. By 1500 the guitar was   23   in Italy, France, and Spain. A French document of that time   24   that many people were playing the guitar. Stradivarius, the famous king of violin makers, could not resist   25   a variety of guitars. Also, there was no lack of music written for the instrument. Haydn, Schubert, and others   26   guitar music. When Beethoven was asked to compose music for the guitar, he went into a rage(大怒) and   27  , but eventually even Beethoven could not ignore the   28  .Legend tells us he finally called the guitar a miniature orchestra. Indeed the guitar does   29   like a little orchestra! Perhaps that is why in rural areas around the world the guitar has been a source of   30   for millions to enjoy.

21. A. certainly             B. mainly                     C. probably           D. partly

22. A. written                      B. learned              C. found                D. spoken

23. A. acceptable           B. popular            C. familiar             D. available

24. A. predicted            B. warned              C. denied               D. recorded

25. A. destroying           B. accusing            C. creating             D. following

26. A. enjoyed                     B. wrote                C. accepted            D. commented

27. A. refused               B. accepted            C. failed                D. escaped

28. A. contribution        B. challenge           C. history                     D. suggestion

29. A. look                   B. feel                   C. taste                  D. sound

30. A. intelligence         B. energy                     C. music                D. spirit

题型:单项选择题

禁止在保护零线上安装()或单独的断流开关。

题型:单项选择题

多点汽油喷射装置使到各气缸的混合气成分()。

A.不均匀

B.较不均匀

C.较均匀

D.很均匀

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