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【多选题】
发展速度和环比发展速度的关系是A.
两者都属于速度指标
B.
相应环比发展速度的连乘积等于发展速度
C.
相应发展速度的连乘积等于环比发展速度
D.
相邻两个发展速度之商等于相应的环比发展速度
E.
相邻两个环比发展速度之商等于相应的发展速度
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【简答题】Klingon Widgets, Inc., purchased new cloaking machinery three years ago for $5 million. The machinery can be sold to the Romulans today for $4 million. Klingon’s current balance sheet shows net fixed ...
【简答题】4-1 平面弯曲的特点是什么?
【单选题】In January the price of widgets was $1.00, and Wendy's Widgets produced 80 widgets. In February the price of widgets was $1.50, and Wendy's Widgets produced 110 widgets. In March the price of widgets ...
A.
0.79 when the price increased from $1.00 to $1.50 and 0.84 when the price increased from $1.50 to $2.00.
B.
1.27 when the price increased from $1.00 to $1.50 and 1.19 when the price increased from $1.50 to $2.00.
C.
0.79 when the price increased from $1.00 to $1.50 and 1.19 when the price increased from $1.50 to $2.00.
D.
1.27 when the price increased from $1.00 to $1.50 and 0.84 when the price increased from $1.50 to $2.00.
【单选题】Suppose that the equilibrium price in the market for widgets is $5. If a law increased the minimum legal price for widgets to $6, producer surplus
A.
would necessarily increase even if the higher price resulted in a surplus of widgets.
B.
would necessarily decrease because the higher price would create a surplus of widgets.
C.
might increase or decrease.
D.
would be unaffected.
【多选题】下列选项中哪些是平面弯曲的特点
A.
具有纵向对称面的梁
B.
梁的外力均垂直于梁的轴线，并作用在纵向对称面内
C.
梁的轴线弯成纵向对称面内的一条平面曲线
D.
梁的外力必须是集中力
【简答题】平面弯曲 变形特点:杆件的轴线由直线变成 ,发生平面弯曲。
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