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【单选题】
对于牛顿流体的本构方程，下列说法错误的是;A.
反映了牛顿流体的应力与应变之间的关系
B.
对牛顿流体的本构方程两边同时取散度可推导出 N-S 方程
C.
平均压力与体变形速率相关
D.
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【简答题】核心期刊
【简答题】核心期刊
【单选题】Most people have had a dog or wanted one as their companion at some time in their lives. If you are thinking of buying a dog, however, you should first decide what sort of companion you need and wheth...
A.
You can always get help from, the specialists.
B.
It is common sense that is the most important when choosing a dog.
C.
You should decide what kind of dog you want.
D.
Size and characteristics of the dogs should be considered too.