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【单选题】
下列属于相关需求的是A.
客户订购的产品
B.
科研试制需要的样品
C.
售后维修需要的备品备件
D.
半成品、零部件、原材料需求
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反馈参考答案：
举一反三
【多选题】地物的反射波谱特性曲线主要有哪三种作用?
A.
它是选择遥感波谱段，设计遥感仪器的依据；
B.
在外业测量中，它是选择合适的飞行时间的基础资料；
C.
它是有效地进行遥感图像数字处理的前提之一，是用户判读、识别、分析遥感影像的基础。
【单选题】Things went well for him during his early life but in middle age his__________seemed to change.
A.
191. Things went well for him during his early life but in middle age his__________seemed to change. A．chance
B.
success
C.
way
D.
Luck
【简答题】三相异步电动机主要由 和 组成。
【简答题】三相异步电动机主要由( )两部分组成。 A、机座和定子 B、转动功率 C、转子和端盖 D、定子和转子
【简答题】Maupassant was born in 1850 in northern France. His early life was not happy. His parents separated when he was 11. Most of his education came informally from Gustave Flaubert-his mother's friend and ...
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