单项选择题

我国《证券法》规定,证券交易所的设立和解散由( )批准。A．会员大会B．国务院###SXB

A.会员大会
B．国务院
C．中国证监会
D．中国证券业协会

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The following are true of a perpetual inventory system except that______.
A．in a perpetual inventory system, a continuous record of the quantities and costs of inventory on hand is maintained
B．a perpetual inventory system is more likely to be used when the stock is composed of a large number of relatively low cost items
C．in a perpetual inventory system, purchases of products are debited directly while sales of products are credited to the stock account
D．a perpetual inventory system provides a better control over stock

A.
A．in
B.a
C.in
D.a

单项选择题

若x_ij表示采取第i个方案d_i，出现第j种状态θ_j时的损益值，P(θ_j)表示第j种状态发生的概率，总共有n种方案，可能出现m种状态，则期望损益为______。
A． B． C． D．

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C.D.174.24.96:6088/Latex/latex.action?latex=XHN1bV97aj0xfV57bX14X3tpan1QKFx0aGV0YSBfe2p9KQ%3D%3D'
E.F.174.24.96:6088/Latex/latex.action?latex=XHN1bV97aT0xfV57bn14X3tpan1QKFx0aGV0YSBfe2p9KQ%3D%3D'
G.H.174.24.96:6088/Latex/latex.action?latex=XHN1bV97aT0xfV57bn14X3tpan1QKFx0aGV0YSBfe2l9KQ%3D%3D'