A、working out
B、having been worked out
C、having worked out
D、to have been worked out
更多“A new technique（）,the producity of loading as a whole increased by 20 percent.”相关的问题
A、Use of artificial fertilizer. B、Introduction of new agricultural machinery. C、The'Open-field'system. D、A system of crop rotation.
A、A.IL-12分泌过多，使得Th0不能向Th1细胞分化 B、B.IL-12分泌不足，使得Th0不能向Th1细胞分化 C、C.IL-12分泌过多，使得Th0向Th2细胞分化 D、D.IL-12分泌不足，使得Th2向Th1细胞分化 E、E.IL-12分泌过多，使得Th2不能向Th1细胞分化
A、Perform a BIOS upgrade B、Update the IDE controller's firmware C、Format the HDD on another PC D、Update the IDE controller's driver
A、the capital of the United States B、the center of Harlem Renaissance C、the center of knickerbockers D、None of the above
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