please answer all questions

Which of the following is considered an engineering and administrative control? Reduction of reverberation Audiometric evaluation Determining whether hazards to hearing exist None of the above Question 6 12 A confined space management policy should contain which of the following elements? Administrative controls and training Permitting and work team requirements Neither A nor B Both A and B OSHA's standards pertaining to radiation hazards are contained in: 29 CFR 1910.067(b)(1) 29 CFR 1926 (Subpart R) 29 CFR 1910 (Subpart G) 29 CFR 1910.789 Question 8 12 The use of electronic devices to reduce sound transmission is known as: Active noise reduction Noise-induced reduction Impulsive noise reduction None of the above