When loading or discharging dry mud or cement, crew members should use goggles and ___. A. facial respirator mask B. ear plugs C. rubberized boots D. fireman‘s outfit

单选题

When loading or discharging dry mud or cement, crew members should use goggles and ___.A. facial respirator mask B. ear plugsC. rubberized boots D. fireman‘s outfit

答案解析

单选题

All cargo intended for carriage on passenger or cargo flight shall( )or go through other security measures before loading.

答案解析