高钾血症的心电图改变最不可能是A．T波高而尖B．QT间期延长C．QRS增宽D．U波E．PR间期延长

Giventheelementfromthewebapplicationdeploymentdescriptor：<jsp-property-group><url-pattern>/main/page1.jsp</url-pattern><scripting-invalid>true</scripting-invalid></jsp-property-group>andgiventhat/main/page1.jspcontains：<%inti=12；%><b><%=i%></b>Whatistheresult？（）

A.<b></b>

B.<b>12</b>

C.TheJSPfailstoexecute.

D.<%inti=12%><b><%=i%></b>

A.response.setHeader（“X-MyHeader”.“34”）：

B.response.addHeader（“X-MyHeader”.“34”）：

C.response.SetHeader（newHttpHeader（“X-MyHeader”.“34”））：

D.response.addHeader（newHttpHeader（“X-MyHeader”.“34”））：

E.response.addHeader（newServletHeader（“X-MyHeader”.“34”））：

F.response.setHeader（newServletHeader（“X-MyHeader”，“34”））：

InaJSP-centricwebapplication，youneedtocreateacatalogbrowsingJSPpage.ThecatalogisstoredasaListobjectinthecatalogattributeofthewebapp’sServletContextobject.Whichscriptletcodesnippetgivesyouaccesstothecatalogobject？（）

A.<%Listcatalog=config.getAttribute（"catalog"）；%>

B.<%Listcatalog=context.getAttribute（"catalog"）；%>

C.<%Listcatalog=application.getAttribute（"catalog"）；%>

D.<%Listcatalog=servletContext.getAttribute（"catalog"）；%>

Formanageabilitypurposes，youhavebeentoldtoadda"count"instancevariabletoacriticalJSP DocumentsothataJMXMBeancantrackhowfrequentthisJSPisbeinginvoked.WhichJSPcodesnippetmustyouusetodeclarethisinstancevariableintheJSPDocument？（）

A.<jsp：declaration>intcount=0；<jsp：declaration>

B.<%!intcount=0；%>

C.<jsp：declaration.instance>intcount=0；.<jsp：declaration.instance>

D.<jsp：scriptlet.declaration>intcount=0；.<jsp：scriptlet.declaration>

Fordebuggingpurposes，youneedtorecordhowmanytimesagivenJSPisinvokedbeforetheuser’ssessionhasbeencreated.TheJSP’sdestroymethodstoresthisinformationtoadatabase.WhichJSPcodesnippetkeepstrackofthiscountforthelifetimeoftheJSPpage？（）

A.<%!intcount=0；%><%if（request.getSession（false）==null）count++；%>

B.<%@intcount=0；%>.<%if（request.getSession（false）==null）count++；%>

C.<%intcount=0；.if（request.getSession（false）==null）count++；%>

D.<%@intcount=0；.if（request.getSession（false）==null）count++；%>

E.<%!intcount=0；.if（request.getSession（false）==null）count++；%>

usarehand-craftedbyyourwebdesignteam；forexample，theSalesManagerrolehasamenuinthefile/WEB-INF/html/sales-mgr-menu.html.WhichJSPcodesnippetshouldbeusedtomakethismenuvisibletotheuser？（）

A.<%if（request.isUserInRole（"SalesManager"））{%><%@includefile=’/WEB-INF/html/sales-mgr-menu.html’%><%}%>

B.<jsp：iftest=’request.isUserInRole（"SalesManager"）’><%@includefile=’/WEB-INF/html/sales-mgr-menu.html’%></jsp：if>

C.<%if（request.isUserInRole（"SalesManager"））{%>.<jsp：includefile=’/WEB-INF/html/sales-mgr-menu.html’/>.<%}%>

D.<jsp：iftest=’request.isUserInRole（"SalesManager"）’><jsp：includefile=’/WEB-INF/html/sales-mgr-menu.html’/></jsp：if>

A.Awebapplicationmayoverridethewebcontainer’simplementationclasses.

B.AwebapplicationrunninginaJ2EEproductmayoverrideclassesinthejavax.*namespace.

C.AwebapplicationclassloadermayNOToverrideanyclassesinthejava.*andjavax.*namespaces.

D.ResourcesintheWARclassdirectoryorinanyoftheJARfileswithinthelibrarydirectorymaybe accessedusingtheJ2SEsemanticsofgetResource.

A.Theservlet’sinitmethodreturnsanon-zerostatus.

B.Theservlet’sinitmethodthrowsaServletException

C.Theservlet’sinitmethodsetstheServletResponse’scontextlengthto0

D.Theservlet’sinitmethodsetstheServletResponse’scontenttypetonull.

E.Theservlet’sinitmethoddoesNOTreturnwithinatimeperioddefinedbytheservlet container.

A.

B.

C.

D.

A.ThedoAfterBodymethodiscalled.

B.ThedoEndTagmethodisNOTcalled.

C.ThetypeattributemaybespecifiedintheTLD

D.ThedoStartTagMethodmustalwaysreturnSKIP_BODY.

E.TheTLDforthistagmustNOTincludeatag.