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【单选题】
工件在定位中出现欠定位，是因为（ ）A.
加工所要求限制的自由度定位中没有被限制
B.
实际被限制自由度数大于加工所要求的自由度数
C.
实际限制自由度数大于六点
D.
实际限制自由度数少于六点
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举一反三
【单选题】Demand is inelastic if the price elasticity of demand is
A.
less than 1.
B.
equal to 1.
C.
greater than 1.
D.
equal to 0.
【简答题】双作用杆活塞液压缸，当活塞杆固定时，运动所占的运动空间为缸筒有效行程的（）。
【单选题】When demand is inelastic the price elasticity of demand is
A.
less than 1, and price and total revenue will move in the same direction.
B.
less than 1, and price and total revenue will move in opposite directions.
C.
greater than 1, and price and total revenue will move in the same direction.
D.
greater than 1, and price and total revenue will move in opposite directions.
【单选题】If demand is inelastic, then
A.
a. buyers do not respond much to a change in price.
B.
b. buyers respond substantially to a change in price, but the response is very slow.
C.
c. buyers do not alter their quantities demanded much in response to advertising, fads, or general changes in tastes.
D.
d. the demand curve is very flat.
【单选题】When demand is inelastic,
A.
quantity sold does not increase when price decreases
B.
selling one more unit of output causes marginal revenue to increase
C.
selling one more unit of output cause total revenue to increase
D.
Buyers are not very responsive to changes in the price of the product.
【单选题】Demand is inelastic if elasticity is
A.
less than 1
B.
equal to 1
C.
greater than 1
D.
equal to 0
【单选题】Demand is inelastic if
A.
a large change in quantity demanded results in a small change in price.
B.
the quantity demanded is very responsive to changes in price.
C.
the price elasticity of demand is less than 1.
D.
the price elasticity of demand is greater than 1.
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