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1、第七章空间解析几何与向量代数A一、1、平行于向量的单位向量为______________.2、设已知两点，计算向量的模，方向余弦和方向角.3、设，求向量在x轴上的投影，及在y轴上的分向量.二、1、设，求(1)(3)a、b的夹角的余弦.2、知，求与同时垂直的单位向量.thatconstructionsiteclean,consciouslymaintainsanitation.(4)ensurethesafetyofmaterialsandsemi-finishedproducts.8.qualityassessment,datacompilation:buried,belongs
2、totheconcealedworksconstruction,thereforeitsqualityinspectionmustbecarriedoutaccordingtoacceptanceofconcealedwork-related.Mainlyinthefollowingaspects:(1)acceptanceofpositioningisaccurate.(2)isfixedsecurely.(3)tighteningcompliancerequirements.(4)haveanimpactonotherprojects.(5)thematerialusedis
3、eligible.(6)completeinformationhasbeencollected.Documentation:shouldfollowconstructionprogressatanytimefinishingselfacceptance,signatureacceptanceaftertherepresentativesofthepartywereinvited.Requirements:(1)covertacceptanceisthetypesetbytheowners'consentbeforetheycanpurchaseandorderunderthepr
4、ogram,eachstonemustusethesamebackground,thesamepattern,sizeerrorin0.5mmstone.Airinfiltrationproperties,stonecurtainwallwindpressurerainwaterleakageindistortionperformance,performanceandenergy-savingperformanceinfrontoftheconstructionshouldbeinaccordancewiththeconstructionplanofthespecificatio
5、nandthefilesizeintheappropriateauthorityinspectiondepartmentsqualifiedtesting.Stoneusedsteelkeel,installationjobmainincludingfollowingsteps:2.1constructionQianprepared2.2preburiedpiecesprocessing2.3measurementandthemeasurementresultsfiguredraws2.4verticalboxpositioningputline2.5turnedreceived
6、piecesinstallation2.6verticalboxinstallation2.7verticalboxcorrectionandacceptance2.8layerhighandthecrossboxmeasurementpositioningandputline2.9crossboxinstallation2.10installation2.11stoneplateinstallation2.12sealedrubberinjection2.13cleanending2.14constructionQianprepared1.DescriptionProjectM
7、anagerrequiredforthedurationoftheprojectschedule,technicalinformation,tools,machinery,apparatus,materials,personnel,temporaryfacilitiesready.2.thescopeofpreviousconstruction(1)projectoutline:tounderstandthesiteprofiles,familiarwiththeconstruc
