The system’s characteristic equation can be used to determine ( ) of a linear time－invariant system.A.the stabilityB.magnitude of the steady-state errorC.the controllabilityD.the observability
题目
A.the stability
B.magnitude of the steady-state error
C.the controllability
D.the observability
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第1题：
Whose textbook is this?
It()John's. It has his name on it.
A. can't be
B. must be
C. might be
参考答案：B
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第2题：
The perform. Integrated Change Contorl process is the ultimate responsibility of the(①).Although changes may be initiated verbally,they should be recorded in writtern form. and entered into the (②)system.
①A.resource manager
B.division manager
C.functional manager
D.project manager
②.A.quality management
B.configuration management
C.project manager
D.scope management
参考答案：D,D
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第3题：
执行完1题的三行代码后，接着执行下面的三行代码： System.out.println（s == s1); System.out.println（s == s2); System.out.println（s1 == s2); 输出的结果是：（）
A．true true true
B．false false true
C．false fasle false
D．true true false
正确 -
第4题：
publicclassSyncTest{
publicstaticvoidmain（Stringargs）{
finalStringBuffers1=newStringBuffer（）；
finalStringBuffers2=newStringBuffer（）；
newThread（）{
publicvoidrun（）{
synchronized（s1）{
s2.append（A”）；
synchronized（s2）{
s2.append（B”）；
System.out.print（s1）；
System.out.print（s2）；
}
}
}
}.start（）；
newThread（）{
publicvoidrun（）{
synchronized（s2）{
s2.append（C”）；
synchronized（s1）{
s1.append（D”）；
System.out.print（s2）；
System.out.print（s1）；
}
}
}
}.start（）；
}
}
Whichtwostatementsaretrue？（）
参考答案：B, D
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第5题：
CompanycomwantstoapplyaPTFtothep5590system.Afterdoingapreviewinstall,theoutputshowsthereisinsufficientspaceinthe/usrfilesystem.Therootvolumegrouphasnoavailablephysicalpartitionsleft.Theydonotwanttoaddadditionaldiskdrivestothesystem,buthaveajfs2filesystemthatisonly8%used.Whatcouldtheydotoutilizespaceinthejfs2filesystemtoapplythisPTF?（）
A.Backupthefilesystemandrecreatesmaller
B.Usethechfstoreducethefilesystemsize
C.Usecplvtocopyfilesystemtosmallersize
D.Usemigratepvtocopyfilesystemtosmallersize
参考答案：B
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第6题：
5、传输速率为500kbit/s的CAN总线系统中，CAN_L对电源短路，那么该CAN总线的数据传输无法进行。
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