问题
单项选择题
在裘皮衣假设里的过水断面渐变流特指的是()。
A.不同的过水断面上的速度分布相同
B.过水断面上的速度分布为线性分布
C.过水断面上的速度分布为均匀分布
D.上述都不正确
答案
参考答案:C
解析:在裘皮衣假设里的过水断面渐变流特指的是过水断面上的速度分布为均匀分布
在裘皮衣假设里的过水断面渐变流特指的是()。
A.不同的过水断面上的速度分布相同
B.过水断面上的速度分布为线性分布
C.过水断面上的速度分布为均匀分布
D.上述都不正确
参考答案:C
解析:在裘皮衣假设里的过水断面渐变流特指的是过水断面上的速度分布为均匀分布
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Mrs Wang lives in Nanjing now. She is 102 years old. People often ask her 1 she can keep healthy in her life. Mrs Wang says everyone 2 live to 102 if he eats healthy food and does some exercise every day. Mrs wang thinks, first of all, 3 is very important. She often 4 a glass of milk and two eggs for it at about 8:00 a.m. Milk and eggs give her energy. So she doesn't often feel 5 in the morning. She 6 eats snacks because she doesn't think they are healthy food. She seldom eats meat too. She usually has some 7 and vegetables for lunch and supper. And 8 meals, she usually has an apple or a banana. Mrs wang does some exercise too. She thinks she is still young. She plays Taiji for 9 every day. Sometimes she also dances with her friends. "Do you want to be 10 forever (永远)? I'm sure you can if you have a good lifestyle!" Mrs Wang says to us. | ||||
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