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【单选题】
按照施工过程质量控制要求，消防给水系统安装前应对采用的主要设备、系统组件、管材管件及其他设备、材料进行现场检验。根据现行国家标准《消防给水及消火栓系统技术规范》GB50974，下列说法中，正确的是（）
A.
流量开关应经相应国家产品质量监督检验中心检验合格
B.
消防水箱应经国家消防产品质量监督检验中心检验合格
C.
压力开关应经国家消防产品质量监督检验中心检验合格
D.
安全阀应经国家消防产品质量监督检验中心检验合格
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参考答案：
举一反三
【单选题】从工作到职业再到事业,是一个阶段性()的过程。
A.
下降
B.
常态化
C.
基本不变
D.
上升
查看完整题目与答案
【单选题】_______of the meeting, he wouldn’t have come for it. [     ]
A.
If he were not told
B.
Had he not been told
C.
Hadn’t he been told
D.
If he hadn’t told
查看完整题目与答案
【单选题】下列函数式中，是最小项之和形式的为______。
A.
Y 1 (A，B，C)=
B.
Y 2 (A，B，C)=
C.
Y 3 (A，B，C)=
D.
Y 4 (A，B，C，D)=
查看完整题目与答案
【单选题】The night watchman was fired because ______.
A.
he didn't devote himself to his work
B.
he told the owner the terrible dream
C.
he always told the truth
D.
he dreamed terrible dreams
查看完整题目与答案
【单选题】下列函数中，为最小项之和形式的是(22)
A.
B.
C.
D.
查看完整题目与答案
【单选题】I think no news ________ good news, he will be back soon.
A.
is
B.
are
C.
was
D.
were
查看完整题目与答案
【单选题】--- Liu Tao has never read the book The Adventure of Tom Sawyer , _________ he? --- _________. He told me it's very interesting. He'd like to read it again.
A.
is; No, he isn't
B.
has; Yes, he has
C.
isn’t; Yes, he is
D.
hasn’t; No, he hasn't
查看完整题目与答案
【单选题】下列的函数式中,是最小项之和形式的为( )。
A.
Y(A,B,C)=A+B'C
B.
Y(A,B,C)=A'B'C'+AB'C+ABC'
C.
Y(A,B,C)=ABC+(A'BC')'
D.
Y(A,B,C,D)=ACD+A'C'D+ABD'
查看完整题目与答案
【单选题】What did the man do?
A.
He didn't tell Alice the news.
B.
He told Alice the news.
C.
He asked the woman to tell Alice the news.
查看完整题目与答案
【单选题】每次克制自己,就意味着比以前更强大,对此理解错误的是
A.
内省能够让品格日臻完美
B.
内省是正确认识自己的唯一途径
C.
内省是自我调节和控制的有效方法
D.
内省是客观认识自我的有效途径
查看完整题目与答案
相关题目：
【单选题】从工作到职业再到事业,是一个阶段性()的过程。
A.
下降
B.
常态化
C.
基本不变
D.
上升
查看完整题目与答案
【单选题】_______of the meeting, he wouldn’t have come for it. [     ]
A.
If he were not told
B.
Had he not been told
C.
Hadn’t he been told
D.
If he hadn’t told
查看完整题目与答案
【单选题】下列函数式中，是最小项之和形式的为______。
A.
Y 1 (A，B，C)=
B.
Y 2 (A，B，C)=
C.
Y 3 (A，B，C)=
D.
Y 4 (A，B，C，D)=
查看完整题目与答案
【单选题】The night watchman was fired because ______.
A.
he didn't devote himself to his work
B.
he told the owner the terrible dream
C.
he always told the truth
D.
he dreamed terrible dreams
查看完整题目与答案
【单选题】下列函数中，为最小项之和形式的是(22)
A.
B.
C.
D.
查看完整题目与答案
【单选题】I think no news ________ good news, he will be back soon.
A.
is
B.
are
C.
was
D.
were
查看完整题目与答案
【单选题】--- Liu Tao has never read the book The Adventure of Tom Sawyer , _________ he? --- _________. He told me it's very interesting. He'd like to read it again.
A.
is; No, he isn't
B.
has; Yes, he has
C.
isn’t; Yes, he is
D.
hasn’t; No, he hasn't
查看完整题目与答案
【单选题】下列的函数式中,是最小项之和形式的为( )。
A.
Y(A,B,C)=A+B'C
B.
Y(A,B,C)=A'B'C'+AB'C+ABC'
C.
Y(A,B,C)=ABC+(A'BC')'
D.
Y(A,B,C,D)=ACD+A'C'D+ABD'
查看完整题目与答案
【单选题】What did the man do?
A.
He didn't tell Alice the news.
B.
He told Alice the news.
C.
He asked the woman to tell Alice the news.
查看完整题目与答案
【单选题】每次克制自己,就意味着比以前更强大,对此理解错误的是
A.
内省能够让品格日臻完美
B.
内省是正确认识自己的唯一途径
C.
内省是自我调节和控制的有效方法
D.
内省是客观认识自我的有效途径
查看完整题目与答案
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