【单选题】【消耗次数：1】
在化工生产中，用于扑救可燃气体、可燃液体和电气设备的起初火灾，应使用（ ）。
①
干粉灭火器和泡沫灭火器
②
“l211”灭火器
③
“l301”灭火器
④
酸碱灭火器
参考答案：
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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
【单选题】
适用于扑灭可燃固体(如木材、棉麻等)、可燃液体(如石油、油脂等)、可燃气体(如液化气、天然气等)以及带电设备的初起火灾的灭火器是( )灭火器。
①
干粉
②
酸碱
③
清水
④
泡沫
随机题目
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The doctor did a lot to reduce the patient’s fear ___ he would die of the disease.
①
that
②
which
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of which
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of that
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These plastic flowers look so ___ that many people think they are real.
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beautiful
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natural
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artificial
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similar
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It is clear that the whole world is passing through a social revolution in which a central_____ must be taken by scientists and technologists.
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process
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attention
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measure
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part
【单选题】
When I took his temperature, it was two degrees above ___.
①
average
②
ordinary
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regular
④
normal
【单选题】
When I worked as the general manager of the firm, I sometimes had ___ to visit London on business.
①
opportunity
②
possibility
③
occasion
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chance
【单选题】
The manager came over and asked the customer how ___.
①
did the quarrel came about
②
the quarrel had come about
③
had the quarrel come about
④
had the quarrel come about
【单选题】
___ I saw the computer, I showed great interest in it.
①
At first
②
For the first time
③
Until
④
The first time