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Given： 22.StringBuilder sb1 = new StringBuilder（"123"）； 23.String s1 = "123"； 24.// insert code here 25.System.out.println（sb1 + " " + s1）； Which code fragment， inserted at line 24， outputs "123abc 123abc"？（）
- A、sb1.append（"abc"）； s1.append（"abc"）；
- B、sb1.append（"abc"）； s1.concat（"abc"）；
- C、sb1.concat（"abc"）； s1.append（"abc"）；
- D、sb1.concat（"abc"）； s1.concat（"abc"）；
- E、sb1.append（"abc"）； s1 = s1.concat（"abc"）；
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更多 “ Given： 22.StringBuilder sb1 = new StringBuilder（"123"）； 23.String s1 = "123"； 24.// insert code here 25.System.out.println（sb1 + " " + s1）； Which code fragment， inserted at line 24， outputs "123abc 123abc"？（）A、sb1.append（"abc"）； s1.append（"abc"）；B、sb1.append（"abc"）； s1.concat（"abc"）；C、sb1.concat（"abc"）； s1.append（"abc"）；D、sb1.concat（"abc"）； s1.concat（"abc"）；E、sb1.append（"abc"）； s1 = s1.concat（"abc"）；” 相关考题
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单选题与外宾交往时，为了表达彼此的亲近感，可以（）。A
征得对方同意后，直接称呼其名字（given name）（不包括姓的名字）B
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单选题与外宾交往时，为了表达彼此的亲近感，可以（）。A
征得对方同意后，直接称呼其名字（given name）（不包括姓的名字）B
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单选题Given： 22.StringBuilder sb1 = new StringBuilder（"123"）； 23.String s1 = "123"； 24.// insert code here 25.System.out.println（sb1 + " " + s1）； Which code fragment， inserted at line 24， outputs "123abc 123abc"？（）A
sb1.append（abc）； s1.append（abc）；B
sb1.append（abc）； s1.concat（abc）；C
sb1.concat（abc）； s1.append（abc）；D
sb1.concat（abc）； s1.concat（abc）；E
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ETA pilot station will be given afterwardsC
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考题
单选题Why does IS-IS use the SPF algorithm?（）A
to determine the pseudonode IDB
to determine the next hop to a given destinationC
to determine the complete path to a given destinationD
to determine the number of routers present in a given area
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单选题What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）A
immediately after receiving the first packet on the shared tree for a given （S，G）B
after receiving over 1 kb/s traffic onthe shared tree for a given （S，G）C
10 seconds after receiving the first packet on the shared tree for a given （S，G）D
30 seconds after receiving the first packet on the shared tree for a given （S，G）E
after receiving over 10 kb/s traffic onthe shared tree for a given （S，G）
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