When extinguishing fires that emit corrosive or toxic gases, firefighters should wear gas masks and corresponding protective equipment, and approach from upwind.

ANSWER · A

Note the title says "fires that emit corrosive or toxic gases." Wear a gas mask to block harmful gases, and stand upwind so the wind does not blow harmful gases over you.

Pass China's driving test.

All 3,068 questions, mock exams, wrong-answer reviews and bookmarks in the app. One-time $7.99.