A new technique _____, the output of the shirt factory increased by 50 per cent.
Ahaving been worked out
Bhas introduced
Chaving worked on
Dhas been turned out
相关试题
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A new technique _____, the output of the shirt factory increased by 50 per cent.
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It’s reported that by the end of this month the output of cement in the factory _____ by about 10%.
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It’s reported that by the end of this year the output of cement in the factory( )by about 30%.
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A new technique（ ）,the yields as a whole increased by 20 percent.
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【单选题】The new washing machines are being turned _____ at the rate of 50 a day in this factory.