How do you operate a portable C0<sub>2</sub> fire extinguisher?().
A、Point the horn down
B、Turn cylinder upside-down
C、Break the rupture disc
D、Pull pin, squeeze grip
A、Point the horn down
B、Turn cylinder upside-down
C、Break the rupture disc
D、Pull pin, squeeze grip
A、Fine. How are you? B、How do you do? Glad to meet you, too. C、How are you? Thank you! D、Nice. How are you?