Chronic Silicosis: Usually occurs after ()or more years of exposure at relatively low concentrations.
A.10
B.11
C.15
D.18
- · 有4位网友选择 D,占比40%
- · 有3位网友选择 B,占比30%
- · 有3位网友选择 A,占比30%
A.10
B.11
C.15
D.18
B.Thereisevidenceofsilicainthebloodstreambutnoclinicalsymptoms.
C.Theclienthasnormalpulmonaryfunctionstudiesbuthasshortnessofbreath.
D.Massivepulmonaryfibrosisisvisibleonchestx-ray,andextrapulmonarysymptomsareapparent.
A、0.1
B、1
C、10
D、100
A、1
B、2
C、3
D、4
A、10
B、30
C、60
D、90
A、Windblown dust
B、Volcanic ash and gases
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
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