经纬仪盘左照准一高目标时，其竖盘读数为 100000'00'' ，则该仪器竖直角的计算公式为：（）
A、α左=L－900，α右=2700－RA
暂无解析
Passage4
Questions 16to 20arebasedonthefollowingpassage:
Morethan30,000driversandfrontseatpassengersarekilledorseriouslyinjuredeachyear.Atthespeedofonly30milesperhouritisthesameasfallingfromathird-floorwindows.Wearingaseatbeltsaveslives;itreducesyourchanceofdeathorseriousinjurybymorethanhalf.
Thereforedriversorfrontseatpassengersover14inmostvehiclesmustwearaseatbelt.Ifyoudonot,youcouldbefinedupto￡50.itwillnotbeuptothedriverstomakesureyouwearyourbelt.Butitwillbethedriver’sresponsibilitytomakesurethatchildrenunder14donotrideinthefrontunlesstheyarewearingaseatbeltofsomekind.
However,youdonothavetowearaseatbeltifyoureversingyourvehicle;oryouaremakingalocaldeliveryorcollectionusingaspecialvehicle;orifyouhaveavalidmedicalcertificatewhichexcusesyoufromwearingit.Makesurethesecircumstancesapplytoyoubeforeyoudecidenottowearyouseatbelt.(76)Rememberyoumaybetakentocourtfornotdoingso,andyoumaybefinedifyoucannotprovetothecourtthatyouhavebeenexcusedfromwearingit.
1.Thistextistakenfrom________.
A)amedicalmagazineB)apolicereport
C)alegaldocumentD)agovernmentinformationbooklet
2.Wearingaseatbeltinavehicle________.
A)reducesroadaccidentsbymorethanhalf
B)savesliveswhiledrivingataspeedupto30milesperhour
C)reducesthedeathrateintrafficaccidentsD)savesmorethan15,000liveseachyear
3.Itisthedriver’sresponsibilityto________.
A)makethefrontseatpassengerwearaseatbelt
B)makethefrontseatchildrenunder14wearaseatbelt
C)stopchildrenridinginthefrontseatD)wearaseatbelteachtimehedrives
4.Accordingtothetext,whichofthefollowingpeopleridinginthefrontdosnothavetowearaseatbelt?
A)Someonewhoisbackingintoaparkingspace.
B)Someonewhoispickingupthechildrenfromthelocalschool.
C)Someonewhoisdeliveringinvitationletters.
D)Someonewhoisunder14.
5.Forsomepeople,itmaybebetter________.
A)towearaseatbeltforhealthreasons
B)nottowearaseatbeltforhealthreasons
C)togetvalidmedicalcertificatebeforewearingaseatbelt
D)topayafineratherthanwearaseatbelt
Thethief’s( )ofguiltclosedthecase.
We _____ your terms satisfactory and now send you our order for 2 sets of Electric Motors.
Hetalkedaboutthemenandbooks____interestedhimgreatlyintheschool.
Theoldmanshouldbetreatedwith____.
