γsg-γsl=γlgcosθ,称为()。
有风无流时,如计程仪改正率ΔL=0%,则相对计程仪航程(SL)和实际航程(SG)之间的关系为()。A.SL&g有风无流时,如计程仪改正率ΔL=0%,则相对计程仪航程(SL)和实际航程(SG)之间的关系为()。A.SL>SGB.SL=SGC.SLD.视风的顺逆而定
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顺风顺流情况下航行,船舶对水航程SL,对地航程SG,船速VE,航时t,则()。A.SGB.SL>VEt,且SL>SGC.SG>SL>VEtD.SLSL
顶风顶流情况下航行,船舶对水航程SL,对地航程SG,船速VE,航时t,则()。A.SGB.SL>VEt,且SL>SGC.SG>SL>VEtD.SLSL
Thesl:shoppingListandsl:itemtagsoutputashoppinglisttotheresponseandareusedasfollows:11.<sl:shoppingList>12.<sl:itemname="Bread"/>13.<sl:itemname="Milk"/>14.<sl:itemname="Eggs"/>15.</sl:shoppingList>Thetaghandlerforsl:shoppingListisShoppingListTagandthetaghandlerforsl:itemisItemSimpleTag.ShoppingListTagextendsBodyTagSupportandItemSimpleTagextendsSimpleTagSupport.Whichistrue?()A.ItemSimpleTagcanfindtheenclosinginstanceofShoppingListTagbycallinggetParent()andcastingtheresulttoShoppingListTag.B.ShoppingListTagcanfindthechildinstancesofItemSimpleTagbycallingsuper.getChildren()andcastingeachtoanItemSimpleTag.C.ItisimpossibleforItemSimpleTagandShoppingListTagtofindeachotherinataghierarchybecauseoneisaSimpletagandtheotherisaClassictag.D.ShoppingListTagcanfindthechildinstancesofItemSimpleTagbycallinggetChildren()onthePageContextandcastingeachtoanItemSimpleTag.E.ItemSimpleTagcanfindtheenclosinginstanceofShoppingListTagbycallingfindAncestorWithClass()onthePageContextandcastingtheresulttoShoppingListTag.
importjava.util.*;publicclassNameList{privateListnames=newArrayList();publicsynchronizedvoidadd(Stringname){names.add(name);}publicsynchronizedvoidprintAll(){for(inti=0;iSystem.out.print(names.get(i)+);}}publicstaticvoidmain(String[]args){finalNameListsl=newNameList();for(inti=0;i<2;i++){newThread(){publicvoidruin(){sl.add(”A”);sl.add(”B”);sl.add(”C”);sl.printAll();}}.start();}}}Whichtwostatementsaretrueifthisclassiscompiledandrun?()
下列程序段执行后,内存变量sl的值是( )。 s1="network"sl=stuff(sl,4,4,"BIOS&quo下列程序段执行后,内存变量sl的值是( )。s1="network"sl=stuff(sl,4,4,"BIOS")? s1A.networkB.netBl0SC.netD.BIOS
若有定义语句:char}sl=‘’0K”,:It s2=”ok”;以下选项中,能够输出“OK”的语句是( )。A.if(strcmp(sl,s2)!=0)puts(s2);B.if(strcmp(sl,s2)!=0)puts(s1);C.if(strcmp(sl,s2)==1)puts(s1);D.if(strcmp(sl,s2)==0)puts(s1);