在自动闭塞去段及电力贯通区段,由自动闭塞、电力贯通线上接引电源;其他地区接引的电源必

题型:单项选择题

问题:

在自动闭塞去段及电力贯通区段,由自动闭塞、电力贯通线上接引电源;其他地区接引的电源必须是最可靠电源,并不低于二级供电。使用单路自闭、贯通等电源又无其他二路电源的探测站配备()在线式UPS不间断应急电源。

A.4h

B.6h

C.8h

D.10h

考点:公路交通运输技能考试列车轴温检测员列车轴温检测员题库
题型:单项选择题
Today’s young people are taking a more active part in online activities. Although the Internet can be    for students to collect information and communicate(交流)with their friends, teachers and parents are becoming more and more     about the unhealthy web content(网上内容)in the bar. They think that the birth of “Harm-free Internet Bars”(健康网吧)is    step to    teenagers.
It was Sunday afternoon and there were not many      seats left in the Feiyu Internet Bar. A few       were found playing    . A person of the bar was walking around       Internet users’ online activities.
“My job is to find anyone who is looking at       websites and then     them from doing so,” he said. “This is a       of the ‘Harm-free Internet Bar’ project”. Feiyu, a famous Internet bar in Beijing is among the first 19 to      the harm-free Internet bar club.
In order to help start a better     for teenagers’ online activities, China’s Communist Youth League has brought out the program named “Harm-free Internet Bar for Teens”.
But while teachers and parents     the “harm-free Internet bars”,   do many school students think of them? 
小题1:
A.successfulB.usefulC.hopefulD.interesting
小题2:
A.amazedB.excitedC.frightenedD.worried
小题3:
A.an easyB.a hardC.an importantD.an impossible
小题4:
A.preventB.stopC.askD.protect
小题5:
A.comfortableB.emptyC.singleD.clean
小题6:
A.teachersB.studentsC.parentsD.officers
小题7:
A.musicB.bridgeC.chessD.online games
小题8:
A.watchingB.lookingC.seeingD.finding
小题9:
A.interestingB.healthyC.unknownD.harmful
小题10:
A.stopB.tellC.makeD.encourage
小题11:
A.workB.programC.roomD.place
小题12:
A.joinB.helpC.openD.keep
小题13:
A.placeB.environmentC.Internet barD.club
小题14:
A.complain aboutB.worry aboutC.welcomeD.club
小题15:
A.howB.whyC.whatD.whether
题型:单项选择题

下列哪种手术宜预防性应用抗生素()

A.疝修补术

B.甲状腺腺瘤摘除术

C. * * 纤维腺瘤切除术

D.开放性骨折清创内固定术

E.皮肤疤痕组织切除术后

题型:单项选择题

在施工现场,卷扬机宜()放置,并(),以保护机械。

题型:单项选择题

在HSB颜色空间中,H代表()。

A.色相

B.明度

C.饱和度

D.彩度

题型:单项选择题

螺杆泵的()弹簧太松,会使螺杆泵流量下降。

A.安全阀

B.压力表

C.吸震

D.平衡机构

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