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【单选题】
在作用于刚体上的任意力系加上或减去（）并不改变系对刚体的作用效用A.
任意平衡力系
B.
任意力系
C.
两个力
D.
两个力偶
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【简答题】What are the contributions of Roman Conquest for the UK ’ s history?
【简答题】求立体体积由 与 所围成的立体(a＞0，b＞0，c＞0)；
【简答题】求空间立体Ω的体积，其中Ω是由 与 所围成的区域
【多选题】What are the UK ’ s three distinct systems of law?
A.
Wales Law
B.
English law
C.
Northern Ireland law
D.
Scots law
【单选题】三相电力变压器带电阻电感性负载运行时，负载电流相同的条件下，越高，则。
A.
副边电压变化率 Δ u 越大，效率 η 越高
B.
副边电压变化率 Δ u 越大，效率 η 越低
C.
副边电压变化率 Δ u 越大，效率 η 越低
D.
副边电压变化率 Δ u越小，效率 η 越高
【单选题】Jaguar has full manufacturing costs of their S-type sedan of £22,803. They sell the S-type in the UK with a 20% margin for a price of £27,363. Today these cars are available in the US for $44,600 whic...
A.
£22,803
B.
£25,486
C.
£27,363
D.
£44,600
【简答题】Around the world, girls do better than boys at school. These are the findings of a recent study that looked at the test results of 1.5 million 15-year-olds in 74 regions across the world. In only thre...
【简答题】Answer the questions using no more than three words from the passage for each question. What did early universities train people do ? 2. Why were several university established during the 18th and 19t...
【单选题】Jaguar has full manufacturing costs of their S-type sedan of £22,803. They sell the S-type in the UK with a 20% margin for a price of £27,363. Today these cars are available in the US for $55,000 whi...
A.
20.0%
B.
15.3%
C.
12.4%
D.
7. 2%
【简答题】求立体体积由(x 2 +y 2 +z 2 ) 2 =a 3 z(a＞0)所围成的立体；
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