A doctor may diagnose CWP or silicosis based on the combination of an appropriate history
A、Primary—emitted directly from a process
B、Secondary—subsequently formed as a result of a chemical reaction
C、Smoke and fly ash from forest fires
D、Pollens and other aeroallergens
A、Windblown dust
B、Volcanic ash and gases
C、Smoke and fly ash from forest fires
D、Pollens and other aeroallergens
A、<5<br> B、5-10
C、10-15
D、>15
A、10μm
B、10cm
C、10mm
D、10nm
A、alpha quartz
B、beta quartz
C、tridymite
D、Normal atmospheric dusts
A、Chest Radiography
B、Lung biopsy
C、CT
D、Pulmonary function tests and blood tests
A、Chronic simple silicosis
B、Accelerated silicosis
C、Complicated silicosis
D、Acute silicosis
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