下列数组a中,版本较新的能在程序运行时动态调整大小的是【 】A.int a[] B

题型:单项选择题

问题:

下列数组a中,版本较新的能在程序运行时动态调整大小的是【 】

A.int a[]

B.String[]a

C.a=new ArrayList()

D.a=new Array()

考点:计算机等级考试JAVA国家计算机二级(Java)74
题型:单项选择题

如右图所示,两烧瓶中充入NO2气体,存在如下平衡:2NO2(g)⇌N2O4(g)△H<0;烧杯甲中盛放100mL 6mol•L-1的HCl溶液,烧杯乙中盛放100mL冷水,现向烧杯甲的溶液中放入25g NaOH固体,同时向烧杯乙中放入25g NH4NO3固体,搅拌使之溶解.

(1)A瓶中气体颜色______;简述理由______.

(2)B瓶中气体颜色______;简述理由______.

题型:单项选择题

阅读下面短文,并根据要求完成文章后的题目。

Working means money, of course teens want jobs

Out of all the teens I interviewed all either wanted a job or already had one. Nowadays, jobs are needed more than ever. Everything costs money, and we are starting to understand that. Most of us get jobs just for "pocket change", so that we can just go out and get that outfit that we've always wanted, for a burger at McDonald's, for our hair, CDs, tapes, shoes, jewelry, and tons more material items. But some of us get jobs because we need to pay for our books or transportation. Many teens have to pay for their phone bills and lunches.

Choosy describes a lot of teenagers' attitudes towards the kind of job they would and wouldn't get. "Something in an attractive place with nice facilities, well paying, work that's not stressful, and a place where there are people that I know that work there," Mark, 16, said about the kind of job ___________. His personal requirements may seem as if they should be mandatory, but if you really want a job your own requirements should be limited. If you are looking for a job it's important that it fits you in a decent manner.

Teens normally don't take jobs that require a lot of thinking, skill, or physical requirements. Most teens see jobs as something on the side. We don't go around constantly talking about our jobs. We are there simply for that paycheck. Some of us do look at it as a learning experience. Tennille, 16-years-old and who works at a cleaning store, said, "Yes, it's helping me with my customer service skills."

小题1:Can you give a title for this passage?

____________________________________________________________________________

小题2: Which sentence in this passage can be replaced by the following one? 

Many young people look on their jobs as secret things.

____________________________________________________________________________

小题3: Please fill the blank in the second paragraph.

Mark, 16, said about the kind of job________________.

____________________________________________________________________________

小题4:What’re your attitudes towards the teens to do jobs outside? Why?

____________________________________________________________________________

小题5: Please translate the underlined sentence in the passage.

____________________________________________________________________________

题型:单项选择题

交易子系统采用B/S结构为用户提供服务。在交易子系统中,实现业务逻辑的对象类是()

A、边界类

B、控制类

C、实体类

D、自定义类

题型:单项选择题

客观环境中影响色彩变化的因素有______。

A.固有色

B.三原色

C.光源色

D.环境色

E.空间色

题型:单项选择题

以下哪项不是痰饮病的常用治法()

A.温脾化饮

B.攻下逐饮

C.温肺化饮

D.理气化饮

E.发表化饮

更多题库