个般认为,致癌物的实际安全剂量所对应的可接受的危险度为
A、≤1/100
B、≤1/1000
C、≤1/10000
D、≤1/100000
E、≤1/1000000
请帮忙给出正确答案和分析,谢谢!
侧流烟气的化学成分与主流烟气在相对含量上()。
A.有较小的差异
B.有较大差异
C.没有差异
D.以上都不对
请帮忙给出正确答案和分析,谢谢!
In order to improve the state of me undernourished population,______.
A.people should increase the areas of grazing land
B.experts should persuade people to give up meir traditional diets
C.local people should grow more crops with vegetable proteins
D.local people should use advanced techniques in crop growing
请帮忙给出正确答案和分析,谢谢!
Mixtures of vegetable proteins can______.
A.provide proteins as meat does
B.produce more proteins than meat can
C.change me style. human body absorbs nutrients
D.easily be absorbed by human body
请帮忙给出正确答案和分析,谢谢!
What has the woman been doing recently in order to get the briefs?
A.Contacting Anderson firm"s lawyer.
B.Having a lot of meetings.
C.Working out of the office.
D.Traveling on business.
请帮忙给出正确答案和分析,谢谢!
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