Which material is smaller than human hair on a nanoscale?
A、red bloodcell
B、DNA
C、carbon nanotube
D、carbon nanotube
A、red bloodcell
B、DNA
C、carbon nanotube
D、carbon nanotube
A、as+adj+as +句子(句子主语代词前指,单复数一致)
B、as+adj+as +句子(句子主语代词前指,单复数一致)
C、as+adj+as +句子(句子主语代词前指,单复数一致)
D、as+adj+as +句子(句子主语代词前指,单复数一致)
A、nanotechnology
B、nanocellulose
C、nanometers
D、nanoparticles
A、environmental protection
B、human health
C、soldier’s safety
D、material transportation
A、EHS research
B、Government regulations
C、International engagement
D、Commercial advertising
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