算法的空间复杂度是指( )。A.算法程序的长度 B.算法程序中的指令条数 C.算法

题型:单项选择题

问题:

算法的空间复杂度是指( )。

A.算法程序的长度

B.算法程序中的指令条数

C.算法程序所占的存储空间

D.算法执行过程中所需要的存储空间

考点:计算机等级考试ACCESS二级ACCESS笔试
题型:单项选择题

有一化学平衡mA(g)+nB(g)⇌PC(g)+qD(g),右图表示A的转化率与压强、温度的关系.由此得出的正确结论是(  )

A.正反应是吸热反应

B.(m+n)<(p+q)

C.压强增大,A的转化率减小

D.温度升高,A的转化率减小

题型:单项选择题

患儿男,8个月。发热,寒战,腹痛,呈水样便,其母诉发病前1天曾进食2个鸡蛋,查体:T39.2℃,粪便常规:WBC5/HP,RBC偶见。

若血培养阳性,涂片为G-杆菌,血清凝集试验:可见07和Hc抗原凝集,而Vi抗原不凝集,诊断可能是()

A.伤寒沙门菌

B.甲型副伤寒沙门菌

C.乙型副伤寒沙门菌

D.丙型副伤寒沙门菌

E.猪霍乱沙门菌

题型:单项选择题

某卫星在靠近行星表面的轨道上运行,若要计算行星的质量,需测量的物理量是(  )

A.行星的半径

B.卫星的半径

C.卫星运行的周期

D.卫星的质量

题型:单项选择题

When should a child start learning to read and write? This is one of the questions I am most frequently (屡次地) asked. There is no hard and fast rule, for no two are alike (同样的), and it would be wrong to set a time when all should start being taught the intricacies (错综复杂的事物) of reading letters to form words.

If a three-year-old child wants to read (or even a two-year-old child for that matter), the child has the right (权利) to be given every encouragement (鼓励). The fact that he might later be “bored” when joining a class of non-readers (非读者) at child school is the teacher’s affair (事情). It is up to the teacher to see that such a child is given more advanced (高级的) reading material.

Similarly, the child who still cannot read by the time he goes to junior school at the age of seven should be given every help by teachers and parents alike. They should make certain that he is not dyslexic (having difficulty in reading 诵读困难的).

Although parents should be careful not to force youngsters (儿童) aged two to five to learn to read (if badly done it could put them off reading for life), there is no harm in preparing them for simple recognition (识别) of letters by labeling (标识) various items in the their rooms. For instance (比如), tie a nice piece of cardboard to their bed with BED written in neat (整齐的), big letters.

Should the young child ask his parents to teach him to read, and if the parents are capable (足以胜任的) of doing so, such an attraction (吸引) should not be ignored (对……不予理会). But the task should never be made to look like a hard job and the child should never be forced to continue, or his interest should start to flag (变弱).

1 This passage is mainly about ____ .

A. what qualities people teaching children reading should have

B. difference age groupings of children to be taught reading

C. when and how children should be taught reading

D. various problems of children who start learning to reading

2 In the writer’s opinion, children start learning to read ____ .

A. early and fast     B. at different time C. by a certain rule D. from word games

3 A three-year-old child who wants to read should ____ .

A. be encouraged   B. go to an infant school

C. start from fun stories D. join a class of non-readers

4The purpose of labeling items in the room is to ____ .

A. make it more colorful

B. teach children to write neatly

C. help children recognize simple letters

D. force children to develop the habit of

5 The writer suggest that ____ .

A. children should ask their parents to teach them to read

B. children should not feel bored if given advanced reading material

C. children starting to read should ask specialists for help

D. children should be taught with patience , care and a sense of humor

题型:单项选择题

申请沿海航区船舶轮机部船员适任证书者,免除()科目的考试。

A、轮机英语

B、船舶管理

C、船舶辅机

D、轮机自动化

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