A series of robberies ________ recently.A.has been reportedB.has reportedC.have been repor
A series of robberies ________ recently.
A.has been reported
B.has reported
C.have been reported
D.have reported
A series of robberies ________ recently.
A.has been reported
B.has reported
C.have been reported
D.have reported
The circuit shown here is a ____.
A、series clipper
B、parallel clipper
C、series clamper
D、shunt clamper
A、the sum of a series of sinusoids with the same amplitudes
B、the sum of a series of sinusoids at the same frequencies
C、the sum of a series of shifted and scaled unit step function
D、the sum of a series of shifted and scaled unit impulse function
Synchronic linguistics deals with a series of language phenomena at the same time.()
A series of seminars ______ scheduled.
A.has
B.is
C./
D.are
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