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【单选题】
以下几种植物对光的反应中，不属于光周期现象的是______。A.
苍耳在短日照下开花
B.
菊花在长日照下保持营养生长
C.
马铃薯块茎在长日照下形成
D.
气孔在光照下张开
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【多选题】下列关于“标准成本”公式的理解正确的有( )。
A.
标准成本=实际产量×单位产品标准成本
B.
成本标准=单位产品标准消耗量×标准单价
C.
单位产品标准成本=单位产品标准消耗量×标准单价
D.
标准成本=单位产品标准消耗量×标准单价
【单选题】In order to select a market segment to enter, a business may NOT consider _______.
A.
the population of each segment
B.
consumer income in each segment
C.
attractive product features for each segment
D.
competitor resources in each segment
【简答题】电感性负载串联电容或并联电阻能否也能提高整个电路的功率因数，但一般不采用，那是因为。（2分）
【判断题】Marketers consider many factors such as market environment, market research, consumers, and strategies in a market process.
A.
正确
B.
错误
【简答题】电感性负载串联电容或并联电阻能否也能提高整个电路的功率因数,但一般不采用,那是因为 。
【简答题】电感性负载串联电容或并联电阻能否提高整个电路的功率因数?是否可以采用?为什么?
【单选题】Consider a market where quantity demanded = 1,500 - 3 x price, and quantity supplied = 2,000 - 5 x price. With respect to equilibrium price and quantity, there is:
A.
no market equilibrium.
B.
a stable market equilibrium.
C.
an unstable market equilibrium.
【单选题】Consider the market for watermelons. Buyers
A.
and sellers would lobby for a price ceiling.
B.
and sellers would lobby for a price floor.
C.
would lobby for a price ceiling, whereas sellers would lobby for a price floor.
D.
would lobby for a price floor, whereas sellers would lobby for a price ceiling.
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