在金属产生电化腐蚀过程中,()A、金属的价态升高 B、金属的价态降低 C、金属的价态

题型:单项选择题

问题:

在金属产生电化腐蚀过程中,()

A、金属的价态升高

B、金属的价态降低

C、金属的价态不变

D、金属产生还原反应

考点:防腐蚀工防腐蚀工题库
题型:单项选择题

根据离心式压缩机性能曲线图,出口压力不变时,提高分子量,则()。

A、不同的介质影响不同

B、流量减小

C、对流量没影响

D、流量增大

题型:单项选择题

FRANCE has destroyed the hopes of those who had planned to take refuge(避难)in one of the few places on Earth which some believe will be spared when the world ends on December 21 .Local officials banned access to the Pic de Bugarach,a mountain in the southwest where rumor has it that the hilltop will open on the last day and aliens will appear with spaceships to save nearby humans.

Eric Freysselinard,the state’s top representative in the area,said he was blocking access to the mountain for public safety reasons to avoid a rush of New Age fanatics(盲信者),sight-seers and media crews. Believers say the world will end on December 21,2012,the end date of the ancient Mayan calendar,and they see Bugarach as one of a few sacred mountains sheltered from the cataclysm(大灾难).

Mr Freysselinard said the 100 police and firefighters will also control approaches to the tiny village of the same name at the foot of the mountain,and if too many people turn up,they will block access there too.“We are expecting a few people who believe in this end of the world,but in extremely limited numbers,” he said in the. nearby city of Carcassonne.“We are expecting greater numbers of people who are just curious,but in numbers we cannot determine. Above all,we are expecting lots of journalists,”he said.

Films,documentaries and websites have promoted the idea that the ancient Mayan calendar predicts that doomsday is on December 21.The culture ministry in Guatemala-where half the population are of Mayan descent-is hosting a massive event in the capital just in case the world actually does end,while tour groups are promoting doomsday-themed getaways.

小题1:Many people plan to go to Pic de Bugarach mainly because      

A.they want to take refuge on December 21,2012

B.they want to meet aliens with spaceships to save humans

C.they want to visit the scenery of the mountain

D.they want to make profits by attracting tourists小题2:Eric Freysselinard was blocking access to the mountain for      

A.forbidding the rumour spreading

B.improving environmental protection

C.protecting public safety

D.avoiding destroying natural sources小题3:What kinds of people would come to Pic de Bugarach?

a. Tourists. b. Journalists. c. Local officials. d. Visionaries. e. The Mayans.

A.a. b. e.

B.a. b. c.

C.a. b. d.

D.b. d. e.小题4:Which of the following would be the best title for the text?

A.The World Ends on December 21

B.The Ancient Mayan Calendar Ends

C.A Massive Event in The Capital

D.French Say‘No’to The Refugee

题型:单项选择题

下列有关异位妊娠的说法,正确的有()

A.异位妊娠绝大部分为输卵管妊娠,最常见于输卵管壶腹部

B.输卵管妊娠流产多见于输卵管壶腹部妊娠,一般发生于妊娠8~12周

C.输卵管妊娠破裂多见于输卵管峡部妊娠,发病多在妊娠6周左右

D.血、尿绒毛膜促性腺激素测定是诊断异位妊娠的确诊方法

E.以上均正确

题型:单项选择题

设计和开发活动中的“变换方式进行计算”的活动是()。

A、设计输出

B、设计评审

C、设计验证

D、设计确认

题型:单项选择题

假如以复利方式借入800元,年利率8%,三年末偿还的本息和是()元。

A.864

B.928

C.1 008

D.992

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