---

When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher，the stream should be directed at the（）.
A:base of the flames，moving the horn from side to side，following the flames upward as they diminish
B:top of the flaming area，moving the horn from side to side，following the flames downward as they diminish
C:center of the flaming area，moving the horn vertically from top to bottom
D:bottom of the flaming area，moving the horn vertically to the top following the flames upward as they diminish

---

出自：海船船员证

显示答案