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【单选题】
幼儿诗是指()A.
适合于幼儿听赏诵读的自由体短诗
B.
幼儿写的诗
C.
适合幼儿听赏诵读的格律诗
D.
有幼儿活动形象的诗
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反馈参考答案：
举一反三
【简答题】简述同步发电机的工作原理
【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】En este insituto se puede estudiar español, inglés y __________.
【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 A exhibits a price-taking firm:
A.
experiencing an economic loss of $80.
B.
making an economic profit of $80.
C.
making an economic profit of $400.
D.
experiencing an economic loss of $400.
【简答题】试述同步牵引发电机工作原理。
【单选题】Refer to Exhibit 12-3. Total revenue for the firm in Graph C equals:
A.
$120.
B.
$150.
C.
$600.
D.
$720.
【简答题】简述同步发电机的工作原理。
【单选题】Refer to Exhibit 12-2. When the market price equals $54, the firm:
A.
ould continue operating temporarily despite an economic loss because the firm is able to cover a portion of its fixed costs.
B.
should shut down.
C.
should continue operating temporarily despite an economic loss because the firm is able to cover all of its variable costs.
D.
should continue operating temporarily despite an economic loss because the firm is able to cover a portion of its fixed costs.
E.
should continue operating because the firm is making a profit.
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