The ambient air quaility standard (24 hours average) for lead in indu

1.	The ambient air quaility standard (24 hours average) for lead in industrial area is
A.	0.65 g/m3
B.	0.75 g/m3
C.	1.0 g/m3
D.	1.5 g/m3
Answer» E.

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The ambient air quaility standard (24 hours average) for lead in industrial area is

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