自顶向下的规划可以分三层求精,分别是______、实体分析和实体活动分析。

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问题:

自顶向下的规划可以分三层求精,分别是______、实体分析和实体活动分析。

考点:计算机等级考试信息管理技术三级信息管理技术笔试374
题型:填空题

计算an+1•an-1÷(an2的结果是(  )

A.1

B.0

C.-1

D.±1

题型:填空题
Nowadays, studying abroad gains popularity in China. Many rich parents would rather send their children abroad to receive education than let them be educated in China.
As every coin has two sides, studying abroad is not an exception. There are advantages for people to attend school abroad. In the first place, he can use the foreign language in his daily life so that his ability in the second language may be greatly improved, as it is obvious that there is no better chance to improve second-language than living in the country where it is spoken. While studying in a foreign country, he will most likely meet many others from overseas and it is possible to make friends from all over the world. This is not only exciting on the social level, but could lead to important overseas contacts in his career as well. He can get familiar with the latest knowledge in science and make use of the first-rate facilities (设备) available. In this way, there is every chance that he is able to widen his horizon (眼界) and broaden his mind.
Of course, attending schools abroad may bring about a series of problems. The most serious problem is language barrier (障碍). Most of the students who go abroad don’t have enough skills in the language spoken there. As a result, on arriving there, they will find it difficult to understand what the teachers say. Besides, for lack of knowledge of the customs of the local people, they may constantly run into trouble in dealing with various situations.
Therefore, given an opportunity to attend a school abroad, one must consider both sides of the factors carefully before making up his mind.
Title: Studying Abroad
Phenomenon
Sending children abroad to receive education is (1) __________ with many rich parents.
 
Advantages
● Children have the (2) ________ chance to improve the second language because they can use it (3) ___________.
● They can make friends with other students from (4)____________.
● They can (5)__________ of the latest knowledge in science and have access to the best facilities.
 
(6)____________
● Language barrier is the number one problem. Because students are not (7)___________ at the language spoken there, they will have difficulty in (8)____________ what the teachers say.
● It is not easy for them to deal with cross-culture communication (9)________ to lack of knowledge of the customs of the locals.
Conclusion
Both sides of the factors should be (10)______________ carefully before one makes a decision.
题型:填空题

休克代偿期(休克早期)的突出表现是

A.血压下降,脉压变小

B.血压基本正常而脉压变小

C.血压下降,脉压正常

D.精神兴奋,烦躁不安

E.面色苍白,皮肤湿冷

题型:填空题

有关细菌转位因子的叙述错误的是()

A.存在于细菌染色体或质粒上

B.可在DNA分子中移动

C.不能从一个基因组移动到另一个基因组中

D.主要有插入顺序、转座子、转座噬菌体三类

E.转位因子的插入可引起基因突变或重组

题型:填空题

男性,28岁。右髋部疼痛,伴午后低热、盗汗、食欲缺乏及体重减轻1年。查体:右髋关节呈屈曲畸形,外观无明显肿胀,屈伸活动受限,Thomas征(+)。ESR56mm/h。X线检查示右髋关节间隙变窄,关节面有虫噬样骨质破坏,右髋臼有2.5cm大小空洞,内见死骨形成。

在治疗期间右髋大转子处出现-8cm×6cm大小包块,表面皮肤红热,有波动感,体温39℃,为了解包块的性质,下列穿刺进针部位的选择,正确的是()

A.脓肿波动明显处

B.于脓肿低位处

C.于脓肿高位处

D.于脓肿外周健康皮肤处

E.只要能抽出脓液,进针部位不限

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