【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.
【判断题】力的作用线通过矩心时,力对点的矩为零。 ( )
【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.
【多选题】当进行强烈体力活动时,主要通过用()使心输出量增加。
【判断题】平面弯曲的特点是:梁上的载荷及支座反力位于纵向对称平面并垂直于梁的轴线,梁的轴线在此平面内弯成一条曲线
【简答题】要发送的数据为 1101011011 。采用 CRC 的生成多项式是 P(X)=X 4 +X+1 。 (1) 试求应添加在数据后面的余数。 (2) 若数据在传输过程中最后一个 1 变成了 0 ,问接收端能否发现? (3) 若数据在传输过程中最后两个 1 都变成了 0 ,问接收端能否发现?
【简答题】要发送的数据为1101011011.采用CRC的生成多项式是P(X)=X^4+X+1。试求应添加在数据后面的余数。数据在传输过程中最后一个1变成0,问接收端能否发现?
【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。