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【单选题】
燃气设施建设工程竣工后,建设单位应当依法组织竣工验收,并自竣工验收合格之日起( )内,将竣工验收情况报燃气管理部门备案A.
15日
B.
30日
C.
60日
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皮皮学刷刷变学霸
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【单选题】The Food and Drug Administration said Wednesday that it is trying to track down as many as 386 piglets that may have been genetically engineered and wrongfully sold into the U.S. food supply. The focu...
A.
Europe
B.
an American research organization
C.
a meat processing plant
D.
an animal farm
【单选题】How many reasons does the speaker give for the fact that animals worldwide are in danger in Track4-1?
A.
2
B.
3
C.
4
D.
5
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