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【单选题】
下列关于室内燃气管的布置与敷设的叙述中不正确的为( )。A.
管道应有大于0.005的坡度坡向城市分配管
B.
引入管直接引入用气房，不得穿过配电室、卧室、浴室、
C.
燃气立管的顶端和底端应设丝，直径不小于15mm
D.
用户支管安装在厨房内，高度不应低于1.7m
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举一反三
【单选题】_____ is not a component of GPS.
A.
Space component
B.
Control component
C.
User component
D.
Atomic clock
【多选题】Which of the following are key parts in the Product Component Model?
A.
core component
B.
use component
C.
support services component
D.
packaging component
【单选题】The emotional or feeling component of a person's attitude is called ________.
A.
complex understanding
B.
the cognitive component
C.
the affective component
D.
a complex attitude
E.
the behavior component
【多选题】Which of the following are key parts in the Product Component Model?
A.
Core component
B.
Use component
C.
Support services component
D.
Packaging component
【多选题】the correlation coefficients between the component and the variable is related to ( ).
A.
Standard deviation of the ith principal component
B.
Standard deviation of the kth variable
C.
Standard deviation of the kth principal component
D.
Standard deviation of the ith variable
E.
the principal component coefficient between and
【单选题】______is not a component of GPS.
A.
space component
B.
Control component
C.
User component
D.
Alarming component
【单选题】The _______ is not a component of GPS.
A.
space component
B.
user component
C.
Control component
D.
alarming component
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