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地形平坦开阔，地层由第四系全新冲积层，第四系上更新统冲层组成，局部表覆第四系全新统人工堆积层。第四系全新统冲积层厚度约25～50m，岩性主要为黏土、粉质黏土、粉土、粉砂、细砂；第四系上更新统冲积层厚度大于50m，岩性主要为黏性土、粉土、粉细砂等。管桩深度范围内地层主要为：粉土、黏土、粉质黏土，局部表层为杂填土。couplingCentreshallbechecked,thesecondpouredconcretestrengthofmorethan70%.Intheprocessofreamingorboring,apartfromthespecialprovisionsinfactory,doesnotallowanyworkthatmayaffectthecouplingCentre,suchasirrigation,tocylinderconnectionstofloodthecondenserpipesandsoon.Wellboring,hingeboltholeflangewithcouplingofvertical,notoblique.Mountingboltsshouldbeaddedlubricants,typinggentlywithasmallhammer,nottoolooseortootight,packedtheboltswiththecorrespondingsealscrewholeshouldbemarked.6.4.5.4.2couplingreamedandpairingsisclosetothediameterofboltbearinggoodhingeholes,dressedwithagoodtwocouplingboltsbeforeyoucanmovetherotor,boring-reamingholeinturn.Couplingboltsmustbetightcouplingissymmetricaldiameter,inboring,reaming,twoboltsout.Wellboring,hingeboltholeflangewithcouplingofvertical,notoblique.Duetothecouplingboltsinaccordancewithhingeholescorrespondingtothediameterofthescrewholesonebyoneafterprocessing,processingbackboltinstallationlocationcannotbechanged,soaccordingtoboltaftertheactualweightdifferenceofnutandlockwashertomatch.Generalrequirementsforcouplingtwosymmetricaldiameterbolt,nutandlockwasher'stotalweightdifferenceshouldnotbegreaterthan10gandknocksstampedmark.(SeeFigure18)Thecouplingboltsapplylubricant,andthengentlywithcopperhome,nottoolooseortootight.BoltAssemblyisfinished,symmetricaltighteningallboltsto30%,50%,70%,100%force,andcheckthecouplingflutterandbeforeconnectingthecirclegraduallychangesitsvalueshouldbelessthan0.02mm.Tighteningtorqueofthecouplingboltsshallcomplywiththetechnicalrequirementsmanufacturersdrawings,withadynamometricwrenchorlogtensiontools.Threewheelrotorswingtestcouplingconnectionsshouldbechecked:takingleave,产科学练习题一、单选题1、24岁初孕妇，妊娠33周，头痛6天，经检查血压160/110mmHg,治疗3天无显效。今晨5时突然出现剧烈腹痛。检查子宫板状硬。最可能的诊断是：A、妊娠合并急性阑尾炎B、胎盘早剥C、前置胎盘D、先兆子宫破裂E、先兆早产2、25岁初产妇，妊娠39周，规律宫缩7小时，血压110/70mmHg，骨盆外测量未见异常，预测胎儿体重为2650g，枕左前位，胎心140次/分，肛查宫口开大3cm，S=O。本例正确的处置应是：A、不予干涉，观察产程进展B、静脉滴注缩宫素C、静脉推注地西泮（安定）D、静脉滴注10%葡萄糖液内加维生素CE、人工破膜3、25岁初孕妇，妊娠35周，自觉头痛眼花5日，经治疗3日未见显效。今晨7时突然出现腹痛并逐渐加重，呈持续性，检查腹部发现子宫板状硬。本例最可能的诊断是：A、轻型胎盘早剥B、重型胎盘早剥C、先兆子宫破裂D、前置胎盘E、先兆早产4、26岁初产妇，妊娠39周。肩右后位，于24小时前胎膜已破，现宫开大6cm，胎心140次/分，未见病理缩复环。本例恰当处理应是：A、持续吸氧B、静脉注射地西泮C、静脉滴缩宫素D、乙醚深麻醉下行内转胎位术E、行剖宫产术5、26岁初产妇，妊娠40周，规律宫缩13小时，自然破膜2小时，宫口开大4cm，胎心110次/分，胎心监测频繁出现晚期减速。本例正确处置应是：A、急查尿雌激素/肌酐比值B、吸氧，左侧卧位C、静脉注射25%葡萄糖液内加维生素CD、静脉滴注缩宫素，加速产程进展E、立即行剖宫产术6、27岁妊娠38周初产妇，规律宫缩16小时，已破膜，宫缩弱，宫口开大4cm，胎心170次/分，宫缩时觉肛门坠胀。本例正确处理应是：A、肌注哌替啶B、静脉滴注缩宫素地形平坦开阔，地层由第四系全新冲积层，第四系上更新统冲层组成，局部表覆第四系全新统人工堆积层。第四系全新统冲积层厚度约25～50m，岩性主要为黏土、粉质黏土、粉土、粉砂、细砂；第四系上更新统冲积层厚度大于50m，岩性主要为黏性土、粉土、粉细砂等。管桩深度范围内地层主要为：粉土、黏土、粉质黏土，局部表层为杂填土。couplingCentreshallbechecked,thesecondpouredconcretestrengthofmorethan70%.Intheprocessofreamingorboring,apartfromthespecialprovisionsinfactory,doesnotallowanyworkthatmayaffectthecouplingCentre,suchasirrigation,tocylinderconnectionstofloodthecondenserpipesandsoon.Wellboring,hingeboltholeflangewithcouplingofvertical,notoblique.Mountingboltsshouldbeaddedlubricants,typinggentlywithasmallhammer,nottoolooseortootight,packedtheboltswiththecorrespondingsealscrewholeshouldbemarked.6.4.5.4.2couplingreamedandpairingsisclosetothediameterofboltbearinggoodhingeholes,dressedwithagoodtwocouplingboltsbeforeyoucanmovetherotor,boring-reamingholeinturn.Couplingboltsmustbetightcouplingissymmetricaldiameter,inboring,reaming,twoboltsout.Wellboring,hingeboltholeflangewithcouplingofvertical,notoblique.Duetothecouplingboltsinaccordancewithhingeholescorrespondingtothediameterofthescrewholesonebyoneafterprocessing,processingbackboltinstallationlocationcannotbechanged,soaccordingtoboltaftertheactualweightdifferenceofnutandlockwashertomatch.Generalrequirementsforcouplingtwosymmetricaldiameterbolt,nutandlockwasher'stotalweightdifferenceshouldnotbegreaterthan10gandknocksstampedmark.(SeeFigure18)Thecouplingboltsapplylubricant,andthengentlywithcopperhome,nottoolooseortootight.BoltAssemblyisfinished,symmetricaltighteningallboltsto30%,50%,70%,100%force,andcheckthecouplingflutterandbeforeconnectingthecirclegraduallychangesitsvalueshouldbelessthan0.02mm.Tighteningtorqueofthecouplingboltsshallcomplywiththetechnicalrequirementsmanufacturersdrawings,withadynamometricwrenchorlogtensiontools.Threewheelrotorswingtestcouplingconnectionsshouldbechecked:takingleave,2C、嘱产妇朝向胎背的对侧方向侧卧D、立即行剖宫产术7、28岁初孕妇，妊娠39周，主诉肋下有块状物。腹部检查：子宫呈纵椭圆形，胎先露部较软且不规侧，胎心在脐上偏左，本例应为：A、枕先露B、臀先露C、复合先露D、肩先露E、面先露8、测孕妇坐骨结节间径7.5cm时，还应测量：A、出口前矢状径B、出口后矢状径C、对角径D、坐骨棘间径E、耻骨弓角度9、产程中，产妇子宫出现病理性缩复环提示：A、子宫发育畸形B、子宫不协调收缩C、先兆子宫破裂D、子宫破裂E、软产道异常10、产后出血是指胎儿娩出后24小时，阴道流血量超过：A、400mlB、500mlC、600mlD、700mlE、800ml11、成人妇女骨盆倾斜度的正常值应是：A、50°B、55°C、60°D、65°E、70°12、初产妇，28岁，足月妊娠，合并风湿性心脏病，心功能Ⅱ级。检查：枕左前位，胎心率正常，无头盆不称，决定经阴道分娩。其产程处理，下列哪项正确。A、产妇取平卧位休息B、出现心衰征象时吸氧C、第二产程鼓励产妇屏气用力D、胎肩娩出后腹部放置沙袋并用腹带包扎固定E、产后常规注射麦角新碱，预防产后出血13、初产妇，宫口开全2小时，诊断为持续性枕横位，S+4，胎心148次/分。本例最适宜的分娩方式是：A、静脉滴注缩宫素经阴道分娩B、等待胎头转为枕前位后经阴道分娩C、会阴侧切后行产钳术D、会阴侧切后手转胎头行产钳术E、行剖宫产术14、初产妇，妊娠40周，滞产，产钳助产4000g女婴，胎盘娩出后阴道流血，量时多时少，检查子宫软，本例应诊断为：A、胎膜残留B、软产道损伤C、胎盘残留地