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【单选题】
上消化道大量出血是指数小时内失血量超过A.
400m1
B.
500m1
C.
800m1
D.
1000m1
E.
1500m1
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反馈参考答案：
举一反三
【单选题】The average fixed cost curve
A.
always declines with increased levels of output.
B.
always rises with increased levels of output.
C.
declines as long as it is above marginal cost.
D.
declines as long as it is below marginal cost.
【单选题】Average fixed costs
A.
will remain unchanged as output expands.
B.
are defined as the change in total costs divided by the change in output.
C.
will always increase as output increases.
D.
will always decrease as output expands.
【单选题】Average fixed cost:
A.
can be calculated by dividing total fixed cost by the level of output produced.
B.
can be graphed as a horizontal line, with dollars on the vertical axis and quantity on the horizontal axis.
C.
decreases as output increases.
D.
is characterized by both a. and c.
【单选题】The average fixed cost curve
A.
a. always declines with increased levels of output.
B.
b. always rises with increased levels of output.
C.
c. declines as long as it is above marginal cost.
D.
d. declines as long as it is below marginal cost.
【单选题】下列关于多式联运单据的叙述，错误的是( )。
A.
多式联运单据是多式联运合同的证明
B.
多式联运单据具有物权凭证的性质和作用
C.
多式联运单据是多式联运承运人收到货物的凭证
D.
多式联运单据是多式联运承运人签发的，保证据此交付货物的单证
【单选题】Average fixed cost:
A.
remains unchanged as output expands.
B.
is defined as the change in total cost divided by the change in output.
C.
always increases as output increases.
D.
always decreases as output expands.
【单选题】Average fixed cost:
A.
declines continuously as output increases.
B.
is always greater than average variable cost.
C.
equals the difference between average total cost and average variable cost.
D.
is characterized by both (a) and (c).
【单选题】The average fixed cost curve( )
A.
always declines with increased levels of output.
B.
always rises with increased levels of output.
C.
declined as long as it is above marginal cost.
D.
declined as long as it is below marginal cost.
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