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问题 单项选择题

在平面环形交叉口中心岛设计中，必须遵守的要求是( )。

A．中心岛应布置为圆形

B．中心岛半径的确定应满足设计车速的要求

C．应布置人行道

D．中心岛应设置交通标志

答案

参考答案：B

单项选择题

下列不是Ⅻ因子激活成Ⅻa特性的是（）

A.是分子构型发生改变

B.是通过接触激活

C.可发生于血管内皮下胶原暴露时

D.是蛋白水解而发生变化

E.可由内毒素作用引起
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单项选择题

A typical (160) language contains an applicative sub-language which approximates the mathematical abstractions of "timeless" functions applied to "spaceless" values, where the actual operation sequences and use of storage space during expression evaluation are organized behind the (161) . In this setting, values are data structures of low volume, typically a few computer words or less, which means that an illusion of spacelessness can be realized by having (162) results during expression evaluation stored at the discretion of the language implementation, and effecting parameter (163) and (164) operations through value copying.

A．middle

B．intermediate

C．previous

D．final
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