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【多选题】
园艺设施上玻璃主要有三种： [填空(1)] 、 [填空(2)] 和 [填空(3)] 。A.
平板玻璃
B.
钢化玻璃
C.
红外线吸收玻璃
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举一反三
【单选题】Bart consumes food and clothing, which are both normal goods. Suppose that the price of food falls. The substitution effect of this price decrease is ________ and the income effect of this price decre...
A.
that Bart buys more clothing and less food; that Bart buys more of both food and clothing
B.
reflected by a change in the relative prices of food and clothing; is represented by a movement along the original indifference curve
C.
reflected by a parallel shift outward of the budget line; that Bart earns more money each month
D.
reflected by the change in the slope of the budget line; that Bart has greater purchasing power
【单选题】Theunderlined part is ______________ of the following sentence.The average American teenager consumes enormous quantities of junk food.
A.
the topic
B.
the minor supporting
C.
the major supporting
D.
the controlling idea
【简答题】Jack consumes a pound of cheese a day.
【单选题】无效腔增大( )
A.
血液PO2↑,PCO2↓
B.
血液PO2↑,PCO2↑
C.
血液PO2↓,PCO2↓
D.
血液PO2↓,PCO2↑
E.
血液PO2、PCO2正常
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