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【单选题】
考虑下图给出的系统,其中 如果 是单位阶跃输入, 则输出 的终值为A.
B.
C.
D.
以上都不对
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举一反三
【单选题】People ______ that vertical flight transports would carry millions of passengers as do the airliners of today.
A.
convinced
B.
anticipated
C.
resolved
D.
assured
【单选题】Why was the passenger jet forced to land at Halifax, Canada?
A.
Some passengers would get off the plane in Canada.
B.
There was something wrong about the plane and it could not fly again.
C.
Because there were criminals on the jet plane.
D.
Because it had been thought that the jet had been hi-jacked.
【单选题】I am afraid to sleep. I have been afraid to sleep for the last few weeks. I am so tired that, finally, I do sleep, but only for a few minutes. It is not a bad dream that wakes me it is the reality I t...
A.
refused to speak to her
B.
was pleasant and attractive
C.
was selling skirts and ribbons
D.
recognized her immediately
【单选题】--Did you sleep well yesterday? -- Never _____. I fell into a deep sleep the moment I went to the bed.
A.
bad
B.
worse
C.
better
D.
best
【单选题】I wanted nothing but _____,_____ I stayed up all the night.
A.
sleep; for
B.
sleep; so
C.
to sleep; so
D.
to sleep; for
【单选题】I like ________ a little longer ________ weekends. [ ]
A.
sleep, on
B.
to sleep, on
C.
sleep, in
D.
to sleep, in
【单选题】People______ that vertical flight transports would carry millions of passengers as do the airliners of today.
A.
comprehended
B.
anticipated
C.
revealed
D.
asserted
【单选题】What options would they offer to passengers?
A.
Hot beverages
B.
Steamed buns
C.
Light meals
D.
All of the above
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