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【单选题】
电商流量价格高企的结构性问题，使得线下零售市场重新被许多新的需求“激活”起来。未来网络营销会如何发展（ ）。A.
重新被线下零售取代
B.
线上线下共同发展
C.
网络营销最终打败线下销售
D.
随着网络技术的发展，网络营销将重新焕发新的优势
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反馈参考答案：
举一反三
【简答题】A．superior B．inferior C．subordinate D．coordinate
【单选题】The correlation between the sign of internal force of the beam and the coordinate system is that .
A.
the signs of shear force and bending moment are related to the coordinate system
B.
the signs of shear and bending moment are independent of the coordinate system
C.
the sign of shear force is related to the coordinate system, but that of bending moment is independent of the coordinate system
D.
the sign of shear force is independent of the coordinate system, but the sign of bending moment is related to the coordinate system
【简答题】The three coordinate systems are ____________, ____________ and ___________ coordinate system.
【单选题】A line in the standard (x,y) coordinate plane is parallel to the x-axis and 6 coordinate units above it. Which of the following is an equation of this line?
A.
y=6
B.
x=6
C.
y=6x
D.
y=x+6
E.
x=y+6
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