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【单选题】
以中央子午线投影为纵轴,赤道投影为横轴建立的坐标是_A.
大地坐标系
B.
高斯平面直角坐标系
C.
地心坐标系
D.
平面直角坐标系
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【单选题】For a large firm that produces and sells automobiles, which of the following costs would be a variable cost?
A.
a. The $20 million payment that the firm pays each year for accounting services
B.
b. The cost of the steel that is used in producing automobiles
C.
c. The rent that the firm pays for office space in a suburb of St. Louis
D.
d. All of the above are correct.
【判断题】Services constitute the bulk of most countries' production and marketing efforts.
A.
正确
B.
错误
【单选题】________ goods constitute the bulk of most countries’ production and marketing efforts.
A.
Durable
B.
Impulse
C.
Physical
D.
Service
E.
Event
【单选题】_______ is the ability to offer individually tailored products or services using the same production resources as bulk production.
A.
Size customization
B.
Mass customization
C.
Personalization
D.
Demand customization
【简答题】SAMPLES The samples include pre-production sample, bulk production sample. Two pieces per model of pre-production samples will be sent us before production ( one to Hong Kong office and the other to F...
【简答题】在杨氏双缝干涉实验中,用一块透明的薄云母片盖住下面的一条缝,则屏幕上的干涉条纹将向 移动。
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