【判断题】【消耗次数：1】
气体灭火系统采用的是冷却、窒息（稀释氧气）、隔离（去除燃料）和化学抑制方法中的一种或多种方法。一般包括二氧化碳灭火系统、水蒸气灭火系统、氦气灭火系统和烟雾灭火系统、卤代烷灭火系统等
①
正确
②
错误
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相关题目
【单选题】
二氧化碳灭火系统按应用方式可分为（）
①
A组合分配灭火系统和单元独立灭火系统
②
B高压系统和低压系统
③
C管网灭火系统和无管网灭火系统
④
D全淹没灭火系统和局部应用灭火系统
【多选题】
局部应用二氧化碳灭火系统的应用条件是（）
①
A在气体喷头与保护对象之间，喷头喷射角范围内不应有遮挡物
②
B当被保护对象为可燃性液体时，液面至容器口的距离不应小于150mm
③
C灭火剂的喷射时间一般不小于0.50min
④
D保护对象周围的空气流速不宜大于3m/s，必要时应采取挡风措施
随机题目
【单选题】
—Can you take the day off tomorrow?
—Well, I’ll have to get ____ from my boss.
①
permission
②
permit
③
allowance
④
possession
【单选题】
The house is made of wood and straw, and____to collapse
in a heavy storm.
①
reliable
②
liable
③
easy
④
probable
【单选题】
____ the water left in the kettle, the doctor put several things he unwrapped from a handkerchief.
①
At
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To
③
Within
④
Into
【单选题】
After ____ seemed an endless wait, it was her turn to step into the doctor’s office.
①
it
②
that
③
what
④
which
【单选题】
He wrote the book in ____ with his wife.
①
proportion
②
installment
③
correspondence
④
collaboration
【单选题】
His decision was ____, since he could not see the action
from where he was standing.
①
arbitrary
②
ordinary
③
casual
④
accurate
【单选题】
Operations which left patients ____ and in need
of long periods of recovery time now leave them
feeling relaxed and comfortable.
①
exhausted
②
unhealthy
③
upset
④
fearful
【单选题】
Mother told Rose to buy some sugar in the supermarket
and_____.
①
she did so
②
so she did
③
so did she
④
she did such
【单选题】
The bank is reported in the local newspaper ____ in broad daylight yesterday.
①
to be robbed
②
robbed
③
to have been robbed
④
having been robbed
【单选题】
The thieves ____ the waste paper all over the room while they were searching for the diamond ring.
①
spread
②
scratched
③
scattered
④
burned