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问题 解答题

锐角小于90°，钝角大于90°．______．（判断对错）

答案

因为钝角大于90°且小于180°，

锐角是大于0度且小于90°，

所以说“锐角小于90°，钝角大于90°”是错误的．

故答案为：×．

单项选择题

An architectural style defines as a family of such systems in terms of a（71） of structural organization. More specifically, an architectural style defines a vocabulary of（72） and connector types, and a set of（73）on how they can be combined. For many styles there may also exist one or more（74）that specify how to determine a system’s overall properties from the properties of its parts. Many of architectural styles have been developed over the years.The best-known examples of（75）architectures are programs written in the Unix shell.

A．event-based

B．object-oriented

C．pipe-and-filter

D．layered
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多项选择题

流通合格率(RTY)是一种常用的六西格玛度量指标，对其描述不正确的有( )。

A．RTY指通过检验的最终合格单位数与过程全部生产单位数的比率

B．RTY不涉及生产过程中的子过程，是与商品流通有关的测量指标

C．RTY是一种能够找出过程中返工、返修或报废的地点和数量的度量方法

D．六西格玛质量水平对应的RTY等于99.97%

E．六西格玛质量水平对应的RTY等于99.99966%
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