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【简答题】
Do ones(2,3)=(_);
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举一反三
【简答题】The final destination of many carelessly discarded plastic bags is _____.
【简答题】Do you still get free plastic(塑料) bags from the supermarkets? Free plastic bags are not allowed at shops and supermarkets in China, and people have to pay for them. The rule started on June 1, 2009. I...
【单选题】The supermarket provides customers _____ plastic bags for free.
A.
on
B.
with
C.
of
D.
in
【简答题】将十进制数25.12转换成二进制数（小数点后请保留6位）：（ ）
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