CRH1动车组直流环节的过高电压超过()时,由OVP电路释放。A.1900V B.1

题型:单项选择题

问题:

CRH1动车组直流环节的过高电压超过()时,由OVP电路释放。

A.1900V

B.1950V

C.1800V

D.1650V

考点:动车组机械师考试CRH1型动车组机械师CRH1型动车组机械师题库
题型:单项选择题

近年来,国际上悄然吹起了一股温和之风,“伙伴关系”屡见报端。冷战时期的那种两极对立、剑拔弩张的气氛,正在向一种“碰撞中磨合”“竞争中协调”的新型国际关系中演变。这种变化[ ]

A.表明国际政治多极化新格局已经建立起来

B.中国的“和平崛起”理念得到了两方支持

C.国际恐怖主义受到了很大的遏制

D.反映出主权国家或集团对外政策的务实调整

题型:单项选择题
阅读短文,根据所读内容, 在下表中的空格处填上适当的单词或短语, 每空不超过3个单词。
Cloning has caused much debate..On the one hand , some scientists think valuable tissues and organs can be used to save human lives .On the other hand , some fear that mankind may produce a monster .
Carter: I believe that human cloning is totally immoral . If we interfere with nature, we will have to deal with the consequences .Who knows what could happen? We could produce a monster .Human life would no longer be unique .Human race is using up Earth’s resources . Surely we should be having fewer babies in order to reduce Earth’s population , not cloning more .I feel sorry for ladies who cannot have babies ,but there are many children with no parents ,who would be delighted to have new parents . Ladies who cannot have babies can  adopt children with no parents
Jake :I think cloning is fantastic. It is a great scientific advance.  After all ,scientists have been challenging questions of morality for centuries .On a personal note ,cloning will change my life .My daughter died of heart failure 7 years ago .I miss her very much and hope to clone a new daughter to be with me .That would be nice. .
Cloning has小题1:__________  much debate
小题2:________
sides
Some scientists think valuable tissues and organs can be used to 小题3: ______ the body parts of people who have deadly disease.
I believe that human cloning is 小题4:____________ immoral
If we 小题5:________ with nature ,we may have to deal with 小题6:____________.
Human is 小题7:_____________Earth’s resources. Ladies who cannot have babies can 小题8:____________ children with no parents 
小题9:_______
sides
I think cloning is wonderful
It is a great小题10:___________ advance.
 Personally, I want to have a cloned girl.
题型:单项选择题

在繁华的都市,摩天大楼、城市雕塑、主题乐园、音乐喷泉、先锋美术馆、体育馆等构成了都市人的文化消费景观;在乡镇,人们利用闲暇时间、赶集和民间传统节日,开展庙会、社戏等丰富多彩的文化活动;在偏远和山区。对山歌、赛马等文化活动更具有浓郁的乡土气息。这一切都表明 [ ]

A、地域性和乡土性是文化生产和消费的最重要特征

B、不同区域、不同的自然环境,有不同特色的文化环境

C、文化的生存和繁衍是封闭的、独立的

D、文化的存在毫无规律可循

题型:单项选择题

企业收到已预付贷款9000元的材料一批,有关单据列明应付货款7800元,外地运费300元,增值税1400元,材料验收入库,预付款不足部分尚未支付。该项业务入账时的借方帐户及金额是()。

A.“材料”8100元

B.“材料”7800元

C.“材料”9500元

D.“应付帐款”500元

E.“应交税金——应交增值税”1400元

题型:单项选择题

输液连接中若使用钢针连接,发生针刺伤的概率比其他操作要高出多少倍()

A.2

B.4

C.6

D.8

E.10

更多题库