Propellents are required to be added in the A: Aerosols B: Sprays C: Powder aerosols D: Liquid preparations for use in nebulizers

In aerosols, sunlight splits NO2 into .(NO and atomic oxygen / oxygen and atomic N)?

It is therefore essential that the methods used ensure that there is no or minimal contact between the worker, and others in the laboratory, with the microbe, either directly or as aerosols.

Coxiella bumetti is readily transmitted by A: mites B: lice C: feas D: ticks E: aerosols

Air travelers are allowed to bring on most liquids, gels, and aerosols (from shampoo to hand sanitizer gels) as long as they’ re not prohibited items.

What might avert the danger of the building up of a high concentration of aerosols A: Nuclear power. B: Fossil fuels. C: Carbon dioxide. D: Atom bombs.

It is therefore essential that the methods used ensure that there is no or minimal contact between the worker, and others in the laboratory, with the microbe, either directly or as aerosols. A: 必不可少的 B: 基本的 C: 本质的 D: 精华的