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[主观题]
卷积[sin(πt)ξ(t)]*ξ(t)=()
卷积[sin(πt)ξ(t)]*ξ(t)=()
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第4题
A./ts/,/dʒ/,/tʃ/,/tʃ/
B./tʃ/,/tʃ/,/tʃ/,/tʃ/
C./dʒ/,/tʃ/,/tʃ/,/dr/
D./tʃ/,/tʃ/,/dʒ/,/dʒ/,
第7题
A.310W
B.320W
C.315W
D.300W
第10题
A.don't
B.wouldn't
C.didn't
D.shouldn't
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