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【简答题】
如图4—53所示的信号f(t)，其频谱函数为F(jω)，求下列各值【不必求出F(jω)】。 F(0)=F(jω)｜ω=0
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反馈参考答案：
举一反三
【单选题】ORBIS doctors many patients, but patients do not have money to pay for the .
A.
treat …treatment
B.
treatment …treat
C.
treating …treated
D.
treated ….treating
【简答题】按企业会计准则规定，企业“应付职工薪酬”科目核算的内容不包括支付给职工的货币 性及非货币性福利。( )
【单选题】In a laughter clinic, doctors
A.
laugh at their patients.
B.
encourage their patients to laugh.
C.
smile when they don't feel like laughing.
D.
never stop laughing.
【单选题】________anyone phone, tell them I’m in conference.
A.
Would
B.
Shall
C.
Could
D.
Should
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