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[主观题]
Please__________me to your parents.A.recitedB.readC.memorizeD.r
Please__________me to your parents.
A.recited
B.read
C.memorize
D.remember
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Please__________me to your parents.
A.recited
B.read
C.memorize
D.remember
Please__________me whether I should accept the offer.
A.advise
B.suggest
C.propose
D.direct
已知f1(t)=tε(t),f2(t)=ε(t)-ε(t-2),求y(t)=f1(t)*f2(t-1)*δ'(t-2)。
已知信号h(t)=ε(t一1)一ε(t一2),f(t)=ε(t一2)一ε(t一4),则卷积h(t)*f(t)=_____________。