【单选题】【消耗次数：1】
对预作用自动喷水灭火系统应用范围描述错误的是（）?。
①
用于严禁系统误喷
②
替代干式系统
③
替代湿式系统
④
用于严禁管道漏水
参考答案：
复制
纠错
相关题目
【单选题】
在设计自动喷水灭火系统时，配水管道的工作压力不应大于（）；湿式系统、干式系统的喷水头动作后应由（）直接连锁自动启动供水泵。
①
1.2 MPa ，压力开关
②
0.4 MPa ，火灾报警信号
③
1.2 MPa ，火灾报警信号
④
0.4 MPa ，压力开关
【单选题】
下列关于自动喷水灭火系统的解释不正确的是（）。
①
干式系统是准工作状态时配水管道内充满有压气体的闭式系统
②
湿式系统是一种采用闭式喷头的自动喷头灭火系统
③
预作用系统准工作状态时配水管道内不充水
④
雨淋系统是由火灾自动报警系统控制，向闭式喷头供水的系统
随机题目
【单选题】
The Bakers arrived last night. If they’d only let us know earlier,______at the airport.
①
we’d meet them
②
we’ll meet them
③
we’d have met them
④
we’ve met them
【单选题】
It is said that people can ______ or deposit money from bank through facial recognition, ie, they don’t have to use a bank card.
①
snatch
②
rob
③
draw
④
pull
【单选题】
In the month, the man earned as much as, if______ than $50,000.
①
no more
②
no much
③
not more
④
not much
【单选题】
—Why didn’t you come to join her party?
—I______, but I had to look after my ill mother.
①
would have
②
should
③
would do
④
was going to have
【单选题】
You’ve got a divorce? Why did he decide to______ you after seven years together?
①
keep company with
②
part company with
③
keep in touch with
④
stay in touch with
【单选题】
After filling out this form, please don’t forget to______ your name.
①
sign
②
sigh
③
scribble
④
jot
【单选题】
______, the experiment will be successful
①
If carefully doing
②
If did carefully
③
If carefully done
④
If doing carefully
【单选题】
—Youshouldhavethankedherbeforesheleft.—Imeant_______,butwhenIwasleavingIcouldntfindheranywhere.
①
to do
②
to
③
doing
④
doing so
【单选题】
The United States______ many other industrialized countries,______ major changes over the past 100 years.
①
as well as; has experienced
②
as well as; experienced
③
together with;experienced
④
together with; have experienced
【单选题】
—What’s the matter with the boys?
—They didn’t pass the examination, but they still______.
①
hope that
②
hope it
③
hope to
④
hope so