随着中国航天事业的向前推进,新的课题又等待着我们去突破。这说明( ) A.实践的

题型:选择题

问题:

随着中国航天事业的向前推进,新的课题又等待着我们去突破。这说明(  )

A.实践的发展为人们提供了新的认识工具

B.实践是认识发展的根本动力

C.认识的根本任务是经过感性认识上升为理性认识

D.正确的认识是同客观事物相符合的认识

考点:实践与认识的辩证关系实践及其特征真理
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男孩,10岁,2岁前生活在高氟区,以后随父母迁移至低氟区。

如果发现该儿童患氟牙症的牙整个牙面呈现明显的白垩釉质,釉质表面无明显缺损,根据TF分类法,将该牙记分为()

A.3

B.4

C.5

D.6

E.7

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More and more people like bicycling and it is no surprise. It is fun, healthy and good for the environment. Maybe that’s why there are 1.4 billion bicycles and only 400 million cars on roads worldwide today. Bikes can take you almost anywhere, and there is no oil cost!

Get on a bicycle and ride around your neighbourhooD. You may discover something new all around you. Stopping and getting off a bike is easier than stopping and getting out of your car. You can bike to work and benefit (受益) from the enjoyable exercise without polluting the environment. You don’t even have to ride all the way.

Folding (折叠) bikes work well for people who ride the train. Just fold the bike and take it with you. You can do the same on an airplane. A folding bike can be packed in a suitcase. You can also take a common bike with you when you fly. But be sure to look for information by getting on airline websites. Not all airlines are bicycle-friendly to travelers.

Health Benefits of Bicycling.

·It helps to prevent heart diseases.

·Bicycling helps to control your weight.

·A 15-minute bike ride to and from work three times a week burns off five kilos of fat in a year.

·Bicycling can improve your mood (心情).

·Exercise like bicycling has been shown to make people feel better, more relaxed and self-confident.

·Bicycling is healthier than driving.

When you are riding your bicycle around your neighbourhood, you may ().

A. pollute the environment around

B. find something you didn’t notice

C. go everywhere and use a little oil

D. get off your bike and begin to work

题型:选择题

喷镀工艺有( )。

A.粉末喷镀法

B.化学喷镀法

C.金属丝喷镀法

D.CO2喷镀法

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2003年3月20日,某海事机构检查“河星”轮,其基本资料如下:船籍港:梧州;船舶种类:客船;建造年月:1995年6月12日;航区:内河A级,跨省航行;船长:55m;总吨:670;主机马力:650KW;核定载客人数:160人;船舶检验证书簿核发机构:广西船检局梧州检验处。检查中发现:船上无防火控制图;2003年1月20日进行了一次救生演习,但没有记录在《航行日志》中;船上配有应变部署表,但由于上港更换船员,尚未更新应变部署表的船员名单;船长持有内河一等船长证书,三副持有内河三等大副证书。船上持有DOC副本和SMC,但二者的公司名称不一致。上述哪些事项不符合海事管理的相关规定,并说明理由?

题型:选择题

过冷现象是指落水人员身体的散热速度大于体力新陈代谢的释放热量的速度,从而造成体温比正常体温偏低。()

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