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【多选题】
以下错误的描述 是( )。A.
如果形参和实参的类型不一致，参类型为准。
B.
定义函数时，可以省略不写形参的类型，只写形参名。
C.
return语句后不能是表达式。
D.
如果函数值类型与返回值类型不一致，函数值类型为准。
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举一反三
【单选题】Some fish have a greater ______________ for acid water than others.
A.
tolerance
B.
resistance
C.
dependence
D.
persistence
【简答题】听力原文：M: Of course all companies are aiming for greater efficiency and I think that an important factor in achieving this is a skilled work-force. We take on a number of young apprentices each year, an...
【单选题】The greater the marginal propensity to import:
A.
the smaller the spending multiplier.
B.
the greater the level of investment.
C.
the greater is the net export.
D.
the smaller is the level of consumption.
【简答题】Residential buildings with a building height greater than m, non-single storey public buildings with a building height greater than m, their height is not greater than m are high-rise civil buildings.
【单选题】1880 年,著名科学家贝尔在实验室中发现了一个有趣的现象。他发现光线能够沿着泻出的水柱传播,且光的传播途径能够随着水柱的曲度而变弯。这个现象叫做
A.
光的衍射
B.
光的偏振
C.
光的全反射
D.
光的干涉
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