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【单选题】
下列生理过程中能使ATP含量增加的是 [ ]A.
细胞有丝分裂后期染色体移向两极
B.
小肠中Na + 进入血液的过程
C.
线粒体基质中CO 2 生成的过程
D.
叶绿体基质中C 3 化合物被还原的过程
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【简答题】Options are the most versatile trading instrument ever invented. Since optons cost less than stock, they provide a high leverage approach to trading that can significantly limit the overall risk of a ...
【单选题】蜗轮蜗杆的正确啮合条件是？
A.
m t2 = m a1 = m
B.
α a2 = t 1 = α
C.
m a2 = m t1 = m
D.
α t2 = α a2 = α
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【多选题】蜗轮蜗杆正确啮合的条件是：蜗杆 [填空(1)] 和 [填空(2)] 应分别等于蜗轮[填空31)]和 [填空(4)] 。
A.
轴向模数
B.
轴向压力角
C.
端面模数
D.
端面压力角
【单选题】Foreign currency ___________ are forward transactions with standard contract sizes and maturity dates.
A.
spot transactions
B.
forward transations
C.
futures
D.
options
【简答题】蜗轮蜗杆正确啮合的条件?
【单选题】________ are in essence an insurance contract against the default of one or more borrowers.
A.
Credit default swaps
B.
CMOs
C.
ETFs
D.
Collateralized debt obligations
E.
All of the options
【多选题】蜗轮蜗杆的正确啮合条件是？
A.
m t2 = m a1 = m
B.
α a2 = t 1 = α
C.
m a2 = m t1 = m
D.
α t2 = α a1 = α
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