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【单选题】
中小型立式加工中心常采用( )立柱。A.
移动式实心
B.
移动式空心
C.
固定式实心
D.
固定式空心
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【单选题】If an increase in the price of blue jeans leads to an increase in the demand for tennis shoes, then blue jeans and tennis shoes are
A.
substitutes
B.
complements.
C.
normal goods.
D.
inferior goods.
E.
none of the above.
【单选题】An increase in the number of pineapple growers results in
A.
an increase in the quantity of pineapples supplied and no shift in the supply curve of pineapples.
B.
an increase in the supply of pineapples and a rightward shift in the supply curve of pineapples.
C.
an increase in the supply of pineapples and a leftward shift in the supply curve of pineapples.
D.
no change in the supply of pineapples and a movement along the supply curve of pineapples.
E.
None of the above answers is correct.
【单选题】32) Suppose there is an increase in the saving rate. This increase in the saving rate will cause an increase in which of the following once the economy reaches its new steady state equilibrium?
A.
growth rate of capital per worker
B.
growth rate of output
C.
growth rate of capital
D.
all of the above
E.
none of the above
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