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【判断题】
( )在高级音响设备中,使用最广泛的降噪系统是杜比降噪系统。A.
正确
B.
错误
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【单选题】Mrs. Black doesn’t believe her son is able to design a digital camera, ?
A.
is she
B.
isn’t she
C.
doesn’t she
D.
does she
【简答题】3 月 15 日该批货物到达仓库,经验收发现货物与入库通知单上数量一致,状况正常,王帅对入库单进行反馈。
【单选题】Mrs. Black doesn’t believeher son is able to design a digital camera,___?
A.
does she
B.
is she
C.
isn’t she
D.
doesn’t she
【单选题】I am afraid that Mrs. Black doesn’t believe her son is able to design such a complicated machine, ?
A.
does she
B.
aren’t I
C.
is he
D.
isn’t he
【简答题】9 Mrs. Black doesn’t believe her son is ableto design a digital camera, ?A. is she B. isn’t she C. doesn’t she D. does she
【简答题】Mrs.Black doesn’t believe so many people are suffering from this tsunami，__________? A．aren’t they B．are they C．doesn’t she D．does she
【简答题】已知函数 （ ） （Ⅰ）求函数 的周期和递增区间； （Ⅱ）若 ，求 的取值范围．
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