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【单选题】
下面对图层上的蒙板的描述中不正确的是A.
在图层调板的某个图层中设定了蒙板后,会发现在通道调板中有一个临时的Alpha通道
B.
图层上的蒙板相当于一个8位灰阶的Alpha通道
C.
当按住Alt键的同时单击图层调板中的蒙板,图像就会显示蒙板
D.
在图层上建立蒙板只能是白色的
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举一反三
【单选题】Refer to Exhibit 12-9. Using Graph C, which of the following statements is not true?
A.
There has been an increase in demand in the market.
B.
There has been an increase in supply in the market.
C.
The equilibrium price in the market has increased from P0 to P1.
D.
There has been a change in quantity supplied from Q0 to Q1.
【单选题】Refer to Exhibit 12-5. At a market price of $30, total revenue is sufficient to pay:
A.
all variable costs.
B.
all variable costs and a portion of fixed costs.
C.
all costs, fixed and variable.
D.
only a portion of the variable costs.
【简答题】简述同步发电机的工作原理。
【简答题】电励磁同步发电机的工作原理?
【单选题】Refer to Exhibit 12-3. Graph C exhibits a price-taking firm:
A.
experiencing an economic loss of $120.
B.
making an economic profit of $120.
C.
making an economic profit of $720.
D.
experiencing an economic loss of $600.
【简答题】简单描述同步发电机的工作原理。
【简答题】简述同步发电机的工作原理。
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