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By which of the following means is force efficiently provided to vary the pitch of the blades on a ...
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二管轮《第二章 船舶辅助机械》真题及答案
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下列溶剂中碱性最强
MEA
DEA
DIPA
MDEA
Pleasesendusassoonaspossiblesamplesofthefollowingg
which
as
what
for which
请说出单乙醇胺MEA的质量规格
对于MEA法为了减轻溶液的腐蚀性一般控制酸气负荷不超过摩尔酸气/摩尔MEA
0.1
0.3
0.5
0.7
15%的MEA溶液的饱和蒸汽压随温度升高而降低
MDEA是一种弱碱但它的碱性比MEA强
MEA脱除CO2是物理吸收法
吸收剂MDEA和MEADEA相比有何优越性
纯MEA的有腐蚀性
MEA法
四种主要脱硫方法中只有MEA法没有选择性
下列MEA的说法正确的是
MEA采用__操作下气相损失更大
MEA采用低压操作气相损失更大
MEA的气相损失与操作压力无关
如果压力升高，MEA的气相损失先增大后减小
Thebook_________youwantisonthedesk.Whichofthefollo
who
which
t
当酸气中H2S和CO2含量不高CO2/H2S≤6并且同时脱除H2S和CO2时应采用
MEA
MDEA
MEA和混合胺
DIPA
Thebook______youwantisonthedesk.Whichofthefollowin
that
which
/
it
二甘醇胺法与MEA法相比有何优点
MEA脱硫工艺中溶液的复活操作
MEA脱除CO2是等温吸收
Whichofthefollowingchoicescan’tbeputintheblankofth
of which the name
the name of which
whose name
which name
Whichofthefollowingindicatestheacceptablerangeofva
Mea
Specification limi
Rule of seve
Upper and lower control limit
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Ifarefrigerationcrankcasecompressorwereshortcyclingonthelowpressurecutout switchthecausemightbethatthe_____.
Thestructuralmembersofthehullextendinginaforeandaftdirectionarecalled _____.
Whichofthedeviceslistedwhenusedonanelectro-hydraulicsteeringgearkeeps themovementofthereddercloselyinstepwiththesteeringwheel?
Mostpumpmanufacturersrecommendedthatthedischargepipingforcentrifugalpumps be_____.
ArefrigerationsystemcompressorcrankcaseissweatingorunusuallycoldThisisan indicationof_____.
Inwhichofthelistedhydraulicsystemswilltheinstallationofanoilcoolerbe necessary?
Whatcolorisusedtoindicatethelastshotofanchorchain?
Ifanaircompressorisusedtosupplycompressedairtooutletsthroughouttheengine roomandondeckofavesselthesystemisknownasthe_____.
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Whichcharacteristicorconditionwillhavethegreatesteffectonincreasinga hydraulicoilsviscosity?
Inordertodistributethesidepressuresoverawideareaofthecylinderwallsand linerswhichofthelistedtypesofpistonsareusedinmodemlowpressureaircompressors?
Theinternalforceofamaterialwhichtendstoresistdeformationwhensubjectedto externalforcesisknownas_____.
AmultistagecentrifugalpumpcanbeBESTdescribedashaving_____.
Arefrigerationunitwilltendtoshortcyclewhenoperating_____.
Ifarefrigerationcompressorwillnotstartthereasonmaybe_____.
Machinerydrivingfueloiltransferandfueloilservicepumpsmustbefittedwitha remotemeansofstoppingthemachineryfrom_____.
Sweatingoftherefrigerationsystemcompressorcrankcaseiscausedby_____.
Aknockingsoundfromonecylinderofanoperatingaircompressorindicates_____.
Ifanaircompressorisusedtosupplyairprimarilytothecombustioncontrolsystem andotherpneumaticcontrollerstheentiresystemisknownasthe_____.
Flexiblehoseunderpressureinahydraulicsystemwill_____.
Ifthepumpforahydraulicanchorwindlassisoverheatingthecausemaybe_____.
Mostsolenoidvalvesareactuatedby_____.
Mostpumpmanufacturersrecommendthatthesuctionpipingdimensionforcentrifugal pumpsbe_____.
Crankcasesweatinginarefrigerationsystemiscausedby_____.
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Therefrigerationcompressorinawatercooledrefrigerationsystemisshortcycling onthehighpressurecutoutswitchOnereasonforthiscouldbethe_____.
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Aswingcheckvalveisusedinapipelineto_____.
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