【判断题】切削热由切屑、工件、刀具和周围介质(如空气、切削液)传散出去。不同的加工方法其切削热传散的比例是相同的。
【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...
B.
szk * = ( n + d ) f ( k*).
【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...
【单选题】The balance in the accumulated depreciation account represents the
A.
cash fund to be used to replace long-lived assets.
B.
amount to be deducted from the cost of the long-lived asset to arrive at its fair value.
C.
amount charged to expense in the current period.
D.
amount charged to expense since the acquisition of the long-lived asset.
【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】在产业市场购买组织中,有权决定产品需求及供应商的角色是()
【简答题】Der Lehrer geht___ ___ Fenster. (an)
【简答题】常见的轻型桥台有 ________、________、________和________等。
【判断题】高压隔离开关能通断一定负荷电流,过负荷时可自动跳闸。