目前国内外油类火灾的基本扑救方式是( )。
A．二氧化碳灭火器
B．泡沫灭火器
C．干粉灭火器
D．自动喷水灭火系统
参考答案：B
解析：低倍数泡沫灭火系统适用于开采、提炼加工、贮存运输、装卸和使用甲、乙、丙类液体的场所。不适用于船舶、海上石油平台以及贮存液化烃的场所。中、高倍数适用于汽油、煤油、柴油、工业苯等B类火灾，木材、纸张、橡胶、纺织品等A类火灾，封闭带电设备场所的火灾，液化石油气流淌火灾。
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| Last night, when I was driving back home, I noticed a hitchhiker (搭便车的人) who was having no luck getting a ride. I rolled down my 1 and signed to the man to my car. I asked him where he was 2 and he told me he needed a 3 to his doctor's office which would close in 15 minutes. I told him to 4 and he gratefully did so. 5 he got in he told me that he was a 6 and went out to sea for weeks at a time. He took medicine for his nerves and 7 to get another prescription (处方) before he left on the boat. He said that he had prayed (祈 祷) 8 would stop for him so he could be there before the 9 office closed. With some 10 driving we managed to make it there in about 10 11 . I then asked him how he 12 on getting back home and he said he could walk. "I'll patiently 13 for you and bring you back," I told him. He 14 me and said he should only be about 15 minutes. Afterwards he got back in my 15 and tried his hardest to pay me back: offering me dinner, gas money, even offering to ship me 40 lbs of scallops (海扇贝)! I 16 refused, gave him a smile card and asked him to help someone else the next time he had a 17 . I drove him back to where I had picked him up and 18 one more "thank you" he was on his way. I feel that the universe 19 provides us with what we need. In the man's 20 it was a ride, in mine the opportunity to help someone else. | ||||
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