A.255.255.255.0B.255.255.254.0C.255.255.253.0D.255.255.252.0
A.255.255.255.0
B.255.255.254.0
C.255.255.253.0
D.255.255.252.0
A.255.255.255.0
B.255.255.254.0
C.255.255.253.0
D.255.255.252.0
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.255.192
D. 255.255.255.240
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.255.224
D. 255.255.255.240
A.2
B.3
C.4
D.5
A.28KB
B.56KB
C.14KB
D.32KB
A.Ga=(VT={a,b},VN={S,A,B},S,P),其中P为, S→a|aA|bSS A→aB|bS B→b|bA|aBB
B.Gb=(VT={a,b},VN={S,A,B},S,P),其中P为, S→b|bB|aSS B→aS|bA A→a|aB|bAA
C.Gc=(VT={a,b},VN{S,A,B},S,P),其中P为, S→aB|bA A→a|aS|bAA B→b|bS|aBB
D.Gd=(VT={a,b},VN={S,A,B},S,P),其中P为, S→aB|bA|s A→aS|bAA B→bS|aBB
A.216=65536
B.224=16777216
C.232=4294967296
D.28=256
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