MCQOPTIONS
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MCQOPTIONS
| 1. |
THE_PERMISSIBLE_CONCENTRATION_OF_PM_10_IN_THE_AIR_IS?$ |
| A. | 60μg/m<sup>3</sup> |
| B. | 40μg/m<sup>3</sup> |
| C. | 50μg/m<sup>3</sup> |
| D. | 20μg/m<sup>3</sup> |
| Answer» B. 40‚âà√≠¬¨‚à´g/m<sup>3</sup> | |