【判断题】【消耗次数：1】
干粉灭火器综合四氯化碳、二氧化碳和泡沫灭火器长处，适用于扑救电气火灾，灭火速度快。
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正确
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错误
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相关题目
【单选题】
泡沫灭火器是常用的灭火器，它适用于( )。
①
适用于扑灭木材、棉麻等固体物质类火灾
②
适用于扑灭石油等液体类火灾
③
适用于扑灭木材、棉麻等固体物质类和石油等液体类火灾
④
适用于扑灭所有物质类火灾
【单选题】
泡沫灭火器是常用的灭火器，它适用于（ ）。
①
适用于扑灭石油等液体类火灾
②
适用于扑灭木材、棉麻等固体物质类和石油等液体类火灾
③
适用于扑灭木材、棉麻等固体物质类火灾
④
适用于扑灭所有物质类火灾
【判断题】
二氧化碳灭火器是利用其内部充装的液态二氧化碳的蒸气压将二氧化碳喷出灭火的一种灭火器具，其通过降低氧气含量，造成燃烧区窒息而灭火，一般能造成燃烧中止的氧气含量应低于12%。
①
正确
②
错误
随机题目
【单选题】
—Our son has picked up some bad habits recently, and I am really worried about it.— .
①
Yes, they have some bad habits.
②
Cheer up. I believe he will overcome it.
③
Well, he like drawing.
【单选题】
— As we all know, the invention of the Internet was a great breakthrough in human history. ___________?— Yes, of course.
①
What is your opinion
②
Do you know the reason
③
Do you think so
④
what do you think?
【单选题】
The caregivers hope the elderly people will soon.（考点：recover）
①
regain
②
restore
③
recover
④
refeel
【单选题】
—Do you have much experience with caring for babies?— .
①
Yes, I do. I am responsible, loving, warm girl, and often take care of kids in my free time.
②
No, you are freshmen. You should work hard.
③
Yes, they are. They are very cute.
【单选题】
—Linda, what’s wrong with your grandmother?— .
①
She is not retired
②
She hurt her leg.
③
She got a new house.
④
She got a new book.
【单选题】
The better the elderly people are known, they are.
①
the happier
②
the happy
③
so happy
④
very happy
【单选题】
—Ken did badly in his math test. Im terribly worried about the result.— .
①
I am so happy he is very healthy.
②
Well, it is hard to see.
③
Come on. it isn’t the end of the world.
【单选题】
She chose to be a teacher, but personally I’d to be a caregiver.
①
fancy
②
prefer
③
love
④
hate