【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。
正确
错误
参考答案:
复制
纠错
相关题目
【判断题】 气焊电石起火时必须用干砂或二氧化碳灭火器,严禁用泡沫、四氯化碳灭火器或水灭火
①  正确
②  错误
【多选题】 ( )应配备足够数量的干粉灭火器和二氧化碳灭火器。
①  配电房
②  变压器房
③  柴油发电机房
④  锅炉房
⑤  现场木工车间
【单选题】 扑救带电火灾除选用二氧化碳、干粉灭火器外,还可采用清水扑救。( )
①  正确
②  错误
【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
【多选题】 如果甲苯储罐发生火灾,可用于灭火的灭火器包括()。
①  清水灭火器
②  泡沫灭火器
③  干粉灭火器
④  二氧化碳灭火器
⑤  卤代烷灭火器
【单选题】 下列( )灭火器不适于扑灭电气火灾。
①  二氧化碳
②  泡沫
③  干粉
【判断题】 旋转电机着火时,宜采用干粉灭火器灭火
①  正确
②  错误
【单选题】 使用手提干粉灭火器时( )。
①  先拔掉保险销
②  先要颠倒摇动
③  先按压把
④  先按压把再拔保险销
随机题目
【单选题】 What does the falling intonation on the question “where do you live ?” indicate?
①  I am telling you something you do not know
②  I have not finished yet
③  I am asking a genuine question
④  I know you have told me before.
【单选题】 What is reflected as important in the following example? A. Would you please turn down the radio a little bit? B. Sorry. ↘ (no, I do not want to.) Or B. Sorry? ↗ (what did you say?)
①  Stress
②  Intonation
③  Sounds
④  Pitch Part
【单选题】 What does the falling intonation on the statement “he is moved to Glasgow.” indicate?
①  I am telling you something you do not know
②  I have not finished yet
③  I am asking a genuine question
④  I know you have told me before.
【单选题】 Which of the following is true about pronunciation teaching?
①  Learners whose native language has similar sounds are less likely to have problems with pronunciation
②  Learners who have more exposure to English need less focus on pronunciation
③  Beginning Chinese learners of English need a certain degree of focus on pronunciation
④  All of the above.
【单选题】 Which of the following do not belong to minimal pair?
①  Will well
②  Till tell
③  Fill fell
④  Well well.
【单选题】 What are the ways of practicing stress?
①  Use gestures
②  Use the voice
③  Use the blackboard
④  All of the above.
【单选题】 Which of the following belong to pronunciation perception practice?
①  using minimal pairs, odd one out
②  Which order, completion
③  Same or different
④  All of the above.
【单选题】 Which of the following is the time when students work as a whole class?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 What role does a teacher play in the following activity? While doing a writing task either individually or in groups, the students need to use a particular word they don’t know. So they ask the teacher.
①  Controller
②  Assessor
③  participant
④  Resource-provider.
【单选题】 What role does a teacher play in the following activity? The teacher asks a student a question “Have you ever bought clothes with problems?” If the student doesn’t seem to be ready, the teacher says “for example, a shirt without...” and points to the buttons on his own shirt or jacket.
①  Controller
②  Assessor
③  Organizer
④  Prompter.