Java虚拟机中的( )模块既负责管理针对各种类型数据库软件的JDBC驱动程序,也

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问题:

Java虚拟机中的( )模块既负责管理针对各种类型数据库软件的JDBC驱动程序,也负责和用户的应用程序交互,为Java应用程序建立起基于JDBC机制的数据库连接。

A.JDBCConnection Manager

B.JDBCCommad Manager

C.JDBCDriver Manager

D.JDBCDatabase Manager

考点:计算机等级考试JAVA二级JAVA笔试
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一个质量为m的带正电荷的小球,栓在一根长为L的绝缘轻绳上,绳的另一个端固定在O点,小球位于水平向右的匀强电场中,平衡时细绳与竖直方向成α角,如图所示,现在用力使小球移到O点的竖直下方,绳被拉直,从静止释放小球,求它回到平衡位置时绳的拉力多大?

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National Museums and Galleries on Merseyside represents the full collection of museums and galleries in the city and offers the Eight Pass for a small fee, this enables the visitor a year’s unlimited visits to all eight establishments.

Although it is mainly associated with classical music, the Philharmonic Hall has branched out into popular music and the varied programme now includes country, rock, jazz and pop concerts; similar acts can be seen at the Empire. There is also the Picket on Hardman Street, and on Bold Street also has live music, including the occasional big name wanting to play in a smaller venue.

London Theatre may be separated into three parts. One section encompasses the sophisticated end of the theatre spectrum—plenty of Shakespeare and excellent modern plays. There are also the West End shows—this refers to the big productions, not to where they’re located. There are many big-production plays and operas that make for a great evening out.

Humanities College will set targets in three humanities—based specialist subjects. Applicants must choose a minimum of one key subject from history, geography or English. They will choose two other subjects from the following: religious education, citizenship, classics, English, history and geography.

Dance performances tend to center on Theater, where contemporary dance, ballet and opera can all be found. The Barbican Centre also house excellent productions, and the ICA is a Mecca for experimental dance.

Sexton College is the leading specialist catering(饮食提供)training centre in the education sector. Everyday we offer healthy, innovation and exciting menus, which meet the government standards. We have provided catering and cleaning services to Saint Francis Xavier’s College and the whole Liverpool for many years and recently won the contract to supply catering to Manchester. So join us, and you will get lots of practice.

以下是与广告相关的五个年人,请匹配他们各自可能去的地方。

小题1:Jon Murphy: I have worked for six months in California and have been to places as far as Bangkok, Australia, Canada and throughout Europe. Working with the communities is fantastic.

小题2:James Barton: I suppose I was born with a love of music. Every day, I listen to music for at least two hours and music bands are my favorite.

小题3:Jane Lake: I was at university studying Religious Studies and English. And now my area of practice is painting and drawing.

小题4:Dave Kirby: I met my great friend Andrew Schofield and it was probably he who introduced me to the theatre and plays.

小题5:Gary Burkett: Being a chef involves a lot of work. Not only do you have to cook but you learn about stock control, sourcing quality food, compiling rosters and creating attractive and exciting menus.

题型:单项选择题

通过针对形成犯罪的心理和实施犯罪的途径,将犯罪心理和犯罪行为遏制在萌芽阶段的犯罪预防是()

A.惩戒性预防

B.控制性预防

C.保护性预防

D.堵塞性预防

题型:单项选择题

已知A是2×4矩阵,齐次方程组Ax=0的基础解系是
η1=(1,3,0,2)T,η2=(1,2,-1,3)T
又知齐次方程组Bx=0的基础解系是
β1=(1,1,2,1)T,β2=(0,-3,1,a)T

求矩阵A;

题型:单项选择题

根据《土地管理法》规定,国家建设征用的集体所有的土地,所有权属于国家,用地单位只有()。

A.出租权

B.转让权

C.使用权

D.抵押权

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