问题
单项选择题
在喷水引纬过程中,射流速度与射程的关系呈()规律。
A、正比
B、反比
C、正指数
D、负指数
答案
参考答案:D
在喷水引纬过程中,射流速度与射程的关系呈()规律。
A、正比
B、反比
C、正指数
D、负指数
参考答案:D
完形填空。 | |||
I have an uncle. He likes soccer ball, baseball, volleyball, basketball and 1 . He 2 baseball and basketball very well. He often watches sports games 3 TV. He plays sports every day. He often says (说), "Let's play..." He joins (加入) 4 clubs: basketball club and baseball club. He has 5 sports collection: 12 tennis rackets, 10 baseballs, 3 volleyballs, 2 basketballs and one soccer ball. | |||
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