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问题 单项选择题

关于羊水过少，下述哪项不正确

A．是胎儿窘迫的一个征象

B．是胎儿生物物理评分的一个指标

C．在产程中常伴有CST变异减速的出现

D．是胎儿监护中早期减速出现的一个原因

E．常与胎儿畸形有关

答案

参考答案：D

单项选择题

You are the project manager for a manufacturing company involved with making components for Internal Combustion Engines required for the automobile industry. In the past couple of days, there have been too many defects, and you would like to find out whether unusual events are occurring in your manufacturing process whose causes must be identified and corrected. For this purpose, you should use ______ .

A) inspection
B) Pareto charts
C) statistical sampling
D) control charts
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问答题

车床的哪些原因可影响加工工件的圆柱度超差
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