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1. The best tool for adjusting and setting the pressure on an appliance regu- lator: a. Manometer b. Velometer c. Psychrometer d. An analyzer: Manometer 2. 3/8 NPS black iron pipe shall? a. Not be used for propane b. Not be used in a concealed location c. Not be used for natural gas d. Not be used for indoors: Not be used in a concealed location (6.3.9) 3. A corrugated metal gas connector connected to a range must not exceed? a. 6' b. 5' c. 3' d. 4': 6' (6.21.3) 4. A manual shut-off valve shall be installed?
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