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【多选题】
在药物的一般杂质中必须严格控制限量的有害杂质是：A.
氯化物
B.
铁盐
C.
砷盐
D.
以铅为主的重金属
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皮皮学刷刷变学霸
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【单选题】Of greatest interest to those concerned with the environmental aspects of solid waste management is the issue of—and the need for—resource recovery and recycling. To many Americans, there is perhaps n...
A.
requires further research
B.
is available now
C.
remains to be developed
D.
is still being experimented