题目内容

Manyconsumersunscreenproductscontainsnanomaterialstoenhanceitsprotectiveeffects.Thesematerials(e.g.titaniumdioxide(TiO2))donotdegradeeitheronhumanskinorintheenvironment.Thiscausesethical&environmentalconcerns.Buttheproducersnevertelltheconsumersaboutthis.

A. 对
B. 错

查看答案
更多问题

InthecaseofsalmonvaccineswithPLGAnanoparticles,thePLGAnanoparticlescanenhancetheimmuneresponseofthesalmonvaccines&thusprotectthefishbetter.Buttheeffectsofthenanoparticlesonthefishmeatquality&safetyareunknown.Theenvironmentaleffectsareunknown.Theconsumersknowthiswhenthefishissold.

A. 对
B. 错

Nanomaterials(nanoparticles)arematerialsorparticleswithanyexternaldimensioninthenanometerscale(from1nmto100nm)orhavinginternalorsurfacestructuresinthenanometerscale.

A. 对
B. 错

Nanoparticlesthatarenaturallyoccurring(e.g.volcanicashorsootfromforestfires)oraretheincidentalbyproductsofcombustionprocesses(e.g.welding,dieselengines)areusuallyphysicallyandchemicallyheterogeneous,andareoftentermedultrafineparticles.

A. 对
B. 错

Engineerednanomaterialsareartificiallyproduced,anddesignedwithveryspecificpropertiesrelatedtotheirshape,size,surface,andchemistry.

A. 对
B. 错

答案查题题库