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【单选题】
下图表示一干渠平面图,总干渠和两个分干渠的实测过水断面面积分别为: A=100m 2 ,A 1 =45m 2 ,A 2 =65m 2 。总干渠和右分干渠的实测断面平均流速分别为: v=1.2m/s,v 1 =1.4m/s, ,求左分干渠的断面平均流速 v 2 = ?A.
0.88m/s
B.
1.26m/s
C.
0.98m/s
D.
0.58m/s
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【判断题】When the price level rises unexpectedly, some businesses may mistake part of the increase for an increase in the price of their product relative to others and so decrease their production
A.
正确
B.
错误
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A.
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B.
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C.
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D.
第二产程
E.
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【单选题】In the long-run, some firms will exit the market if the price of the good offered for sale is less than
A.
marginal revenue.
B.
marginal cost.
C.
average total cost.
D.
average revenue.
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【简答题】_______ There are many factors that influence people's purchasing decisions. In some circumstances, people buy mainly based on the price of the product. In other situations, the quality of the product...
【判断题】For some products with considerable profit margin, the seller should immediately cut the price after the counter-offer from the customer.
A.
正确
B.
错误
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