流体在圆形导管内的流速与（）成反比。 A.导管的长度 B.导管直径 C.导管直径三次 发布时间：2018-01-22 18:07 │ 来源：www.tikuol.com 题型：单项选择题 问题： 流体在圆形导管内的流速与（）成反比。A.导管的长度B.导管直径C.导管直径三次方D.导管直径平方
题型：单项选择题 选择方框中的词完成短文。bed football last swimming tired went were homework happy read 1____________ Sunday, Mike was very 2____________. In the morning, he 3____________ to a park with his friends. They played 4____________. Mike's team won the game, they 5____________excited. Then they went 6____________ together. In the afternoon, Mike did his 7____________ and 8____________ a book. In the evening, he felt a little 9____________, so he went to 10____________ early. 查看答案