应用层DNS协议主要用于实现______的网络服务功能。 A.网络设备名到IP地址的

题型:单项选择题

问题:

应用层DNS协议主要用于实现______的网络服务功能。

A.网络设备名到IP地址的映射
B.网络硬件地址到IP地址的映射
C.进程地址到IP地址的映射
D.用户名到进程地址的映射

考点:计算机软件水平考试中级信息系统监理师信息系统网络
题型:单项选择题

2006年1月1日,中华人民共和国中央政府门户网站正式开通。对于我国政务信息化发展来说,中央政府门户网站的开通具有里程碑意义,对于构建阳光政府、实现公民与政府双向互动起到了非常重要的作用。网上交流等,逐渐成为政府与老百姓沟通的新途径,各地的电子政务正是在这一背景下蓬勃发展起来的。从哲学上看,电子政务的出现表明( )

A.各种事物之间都无条件地联系着

B.人们可以创造条件建立新的具体联系

C.人们的需要推动事物联系的不断发展

D.事物发展的动力就是事物之间的联系

题型:单项选择题

原始大气中肯定没有的是 

A.氨气

B.氧气

C.氮气

D.甲烷

题型:单项选择题

下列RNA中含修饰核苷酸最多的是()

A、mRNA

B、rRNA

C、tRNA

D、病毒RNA

题型:单项选择题

Lakes, ponds, and beaches mean summer fun and cool relaxation from hot weather. But water also can be dangerous for kids if you don't take great care. Nearly 1,000 kids die each year by drowning.

Here are some tips to keep your kids safe in the water:

At the Lake or Pond

·Don't let little kids swim alone without adult supervision— lakes or ponds may be shallow near the bank and are suddenly deep sharply further out from shore.

·Ponds and lakes may hide jagged rocks, broken glass, or rubbish.

·Make sure kids wear foot protection; even in the water, they should wear socks or water shoes.

·Watch out for weeds and grass in the water that could trap a leg or arm.

·Most boating accidents, particularly among teenagers, are related to alcohol(饮酒). Be sure teens know about the dangers of alcohol, on and off the water.

At the Beach

·Teach kids to always swim when and where a lifeguard is on duty. Unlike the calm waters of a swimming pool, the beach has special dangers like currents and tides(暗流). Check with the lifeguard when you arrive to find out about the water conditions.

·Tell kids never to stand with their back to the water because a sudden wave can easily knock a child over.

·Teach kids that if they're caught in a dangerous wave, they should swim parallel(顺行地) to the shore or should tread (踩)water and call for a lifeguard's help.

Whether at the lake or at the beach, teach your child to get out of the water during bad weather, especially lightning.

小题1:Which is the right behavior when swimming at the beach?

A.Go off the water without a lifeguard on duty

B.Go on swimming in a heavy rain

C.Go off the water before checking the water conditions

D.Call for help if caught in a dangerous wave小题2:A child should_________ at a lake.

A.swim on his/her own

B.be careful about weeds and grass

C.swim without shoes on

D.drink only a little wine小题3:Swimming at a beach is more dangerous than in a pool because          .

A.there are no lifeguards at a beach

B.there are currents and tides at a beach

C.the waters of a beach are more calm.

D.the waters of a pool are warmer小题4:The passage is probably written for          .

A.students at school

B.kids who want to learn swimming

C.parents with little children

D.coaches who teach kids to swim小题5:In which column(栏目) of a magazine can you find this passage?

A.Education

B.Science

C.Entertainment

D.Sports

题型:单项选择题

患者,女,30岁,技术工人,下楼梯时不慎跌伤致"胸11椎骨骨折",经骨科急诊行"胸11椎骨骨折复位、哈氏棒内固定"术后3周,转入康复科。查体:生命体征平稳,腹股沟以下的感觉和运动功能丧失,大、小便失禁。此患者有尿潴留和尿失禁,下列处理方法中哪些是正确的?()

A.保留导尿优于间断导尿

B.外阴清洁

C.排尿意识训练

D.通过增加腹压训练排尿

E.定时排尿

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