已知等比数列{an}中,a3=32,前三项之和S3=412,则a1=______

题型:填空题

问题:

已知等比数列{an}中,a3=
3
2
,前三项之和S3=4
1
2
,则a1
=______.
考点:等比数列的前n项和
题型:填空题

投标人在招标投标过程中,因违法行为所应承担的行政法律责任的方式有()。

A.警告

B.对单位责令停业整顿

C.没收非法所得

D.拘役

E.吊销营业执照

题型:填空题

患者,女,20岁,胃脘疼痛胀满、拒按,嗳腐吞酸、呕吐,吐出物为腐臭未消化食物,吐后痛减,厌食,苔厚腻,脉滑。应辨证为

A.寒邪客胃证

B.饮食伤胃证

C.肝气犯胃证

D.湿热中阻证

E.瘀血内停证

题型:填空题

下图为甲河示意图,M、L表示支流,a、b是位于支流上的两个观测站。右表为两个观测站的气温(单位:℃)和降水(单位:mm)资料。粗线P表示洋流。读图表资料,完成下列问题。

小题1:关于甲河和洋流P的叙述正确的是

A.甲河水量的变化受支流L的影响较大

B.甲河水量的变化受支流M的影响较大

C.洋流P会使沿岸气候更加湿润

D.P海区船只自北向南航行省时、节能小题2:甲河四季通航,当通航船只吨位最大时

A.我省(河南省)盛行偏北风

B.美国南部正在收摘棉花

C.华北小麦拔节生长

D.天山雪线上升

题型:填空题

阅读理解。

     When she looked ahead,Florence Chadwick saw nothing but a solid wall of fog.Her body was

numb (麻木的).She had been swimming for nearly sixteen hours.Already she was the first woman

to swim the English Channel in both directions.Now,at age 34,her goal was to become the first

woman to swim from Catalina Island to the California coast.

     On that fourth morning of July in 1952,the sea was like an ice bath and the fog was so dense

that she could hardly see her support boats.Sharks cruised (巡游)toward her lone figure,only to

be driven away by rifle shots.Against the frigid grip of the sea,she struggled on-hour after hour-while

millions watched on national television.

     Alongside Florence in one of the boats,her mother and her trainer offered encouragement.They

told her it wasn't much farther.But all she could see was fog.They urged her not to quit.She never

had...until then.With only a half mile to go,she asked to be pulled out.

     Still thawing (使变暖和)her chilled body several hours later,she told a reporter,"Look,I'm not

excusing myself,but if I could have seen land I might have made it." It was not tiredness or even the

cold water that defeated her.It was the fog.She was unable to see her goal.

     Two months later,she tried again.This time,despite the same dense fog,she swam with her faith

intact and her goal clearly pictured in her mind.She knew that somewhere behind that fog was land

and this time she made it!Florence Chadwick became the first woman to swim the Catalina Channel,

eclipsing the men's record by two hours!

1.Why didn't Florence swim across the Catalina Channel for the first time?

A.Because she was too tired to go on swimming.

B.Because the fog was so thick that she lost heart at the sea.

C.Because she couldn't see her goal:the land.

D.Because the sea water too cold to bear.

2.What does "She never had..." mean?

A.She had never been so desperate.

B.She had never thought of giving it up.

C.She had never seen such thick fog.

D.She had never swum across the strait before.

3.Which of the following is NOT true?

A.Florence Chadwick spent less time to swim across the Catalina Channel than any man.

B.Florence Chadwick succeeded in swimming across the Catalina Channel in September,1952.

C.People had to use guns to drive away some flesh-eating fish in the sea.

D.No women but Florence Chadwick were able to swim across the English Channel in both directions.

4.Which of the following is the best title?

A.Keep Your Goals in Sight

B.Swim Across the Catalina Channel

C.The Fog Defeated Her

D.Set a Goal for Yourself

题型:填空题

依据《特种设备安全监察条例》的规定,不属于特别重大事故的是()

A.特种设备事故造成30人以上死亡

B.600兆瓦以上锅炉爆炸的

C.客运索道、大型游乐设施高空滞留100人以上并且时间在48小时以上的

D.起重机械整体倾覆的

更多题库