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【多选题】
下列牌号的钢中( )均属于低碳钢。A.
08
B.
10
C.
20
D.
30
E.
35
F.
45
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【单选题】In Solow's model of economic growth, suppose that s represents the savings rate, z represents total factor productivity, k represents the level of capital per worker, and f(k) represents the per-worke...
A.
szf(k*) = (n + d)k*.
B.
szk * = ( n + d ) f ( k*).
C.
nf(k *) = sk * /(s+d)
D.
f(k *) = sk * /(n+d)
【单选题】In the endogenous growth model presented in the text, suppose that u represents the fraction of time spent working (as opposed to accumulating human capital), b represents the efficiency of human capi...
A.
buH .
B.
zuH .
C.
buz .
D.
buzH .
【单选题】Which of the following statements best represents the position expressed in the article?
A.
If we're not careful, technology will ruin our lives.
B.
Technology is the key to the world's future economic development.
C.
Technological change may not always be a good thing.
D.
Some benefit from technology more than others.
【简答题】It is ringed in four groups of buildings. On the two sides of the hall are small square halls. The one in the east represents the sun, and the one in the west represents the moon, which symbolize both...
【单选题】Which of the following terms represents the form. of heat removed from the refrigerant in the condenser of a refrigeration system?
A.
Latent heat of vaporization
B.
Heat of compression
C.
Superheat
D.
All of the above
【简答题】Der Lehrer geht___ ___ Fenster. (an)
【简答题】常见的轻型桥台有 ________、________、________和________等。
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