多项选择题

日光温室番茄茬次，可分为（）茬次。

A.秋延迟栽培
B.春提早栽培
C.越冬一大茬栽培
D.冬春茬栽培

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企业定额的水平比地区预算定额的水平[填空(1)] 。

答案：高

单项选择题

In an open economy with fixed exchange rates, monetary policy is most effective at increasing real income if

A．capital mobility is low.
B．capital mobility is perfect.
C．monetary policy is ineffective with fixed exchange rates.
D．capital mobility is high.