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【单选题】
主排程(MPR)生产计划中采购的依据是( )A.
设计
B.
生产周期
C.
订单排程
D.
上市时间
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【单选题】听力原文： Recently. a man who was always i13 good health, spent a week in bed with severe flu. It was tile worse illness in his 1ife. The previous week, he and his wife separated. (30)It seems his unusual...
A.
How people fall ill.
B.
The influence of people's emotions on their health.
C.
A new method to cure breast cancer.
D.
Several ways to keep fit.
【单选题】听力原文： Recently, a man who was always in good health, spent a week in bed with severe flu. It was the worse illness in h is life. The previous Week, he and his wife separated. (30)It seems his unusual ...
A.
How people fall iii.
B.
The influence of people's emotions on their health.
C.
A new method to care breast cancer.
D.
Several ways to keep fit.
【简答题】双极型三极管实现放大作用的重要参数是（）。
【简答题】有横突孔的椎骨是 ;椎体上有肋凹的椎骨是 ;有齿突的椎骨是 ;棘突成板状,水平伸向后的椎骨是 。
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