问题
单项选择题
流体流动时，若惯性力起主导作用，流体的流态为（）。
A.层流
B.紊流
C.复合流
D.对流
答案
参考答案：B
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流体流动时，若惯性力起主导作用，流体的流态为（）。
A.层流
B.紊流
C.复合流
D.对流
参考答案：B
| 从方框中选择恰当的句子补全对话。 | |
B: No, 1 I like going to the movies. A: 2 B: Twice a week. A: Well.doyou like watching TV, Bill? C: Yes. 3 A: What's your favorite program? C: Sports shows and game shows. What about you? A: I never watch TV. 4 C: What do you usually do in your spare time? A: l usually exercise. Sometimes I read books. C: 5 |