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【单选题】
药品生产或经营企业应当按照政府采购合同的约定，向指定机构供应的是A.
医疗机构制剂
B.
第一类疫苗
C.
二级野生药材物种人工制成品
D.
没有实施批准文号管理的中药材
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皮皮学刷刷变学霸
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【简答题】Rare species in the world, ______ by hundreds every year, must be jointly preserved by all countries, or humans will encounter ecological disaster in the near future.
【单选题】Generally speaking, there are two destructive tsunamis every year around the world.
A.
Y
B.
N
C.
NG
【单选题】The Great Wall is one of the greatest wonders in the world, ______ people visited it every year. [ ]
A.
the number of
B.
a number of
C.
all the number of
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