问题
单项选择题
在无支流液流当中，任意两端面上的质量流量、重量流量和体积流量之间的关系是（）。
A、都是不相等的
B、质量流量和重量流量相等，但体积流量不等
C、都是相等的
D、质量流量不等，但体积流量相等
答案
参考答案：C
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在无支流液流当中，任意两端面上的质量流量、重量流量和体积流量之间的关系是（）。
A、都是不相等的
B、质量流量和重量流量相等，但体积流量不等
C、都是相等的
D、质量流量不等，但体积流量相等
参考答案：C
Tony loved basketball. One afternoon on his way to a basketball game, he was walking and dreaming about playing college the next year. Suddenly a car hit him and he was thrown three into the air. Tony woke up in a room. When the doctor told him that both his legs were broken, he knew his college basketball dreams were Tony did what the doctors told him． it didn't work when he left the hospital，Tony was sent to a rehab center’． A week after he arrived there，he met Sunny Chen. Sunny used to be a coach．His legs were hurt in a skating accident．Though he couldn't move his legs，Sunny became a coach of a basketball called the Suns．It was a on-wheelchair basketball team，because on the team played from a wheelchair．Sunny invited Tony to the game．Tony played badly, but for the time since the accident，he stopped feeling sorry for himself． After becoming a part of the Suns，Tony improved quickly．Basketball Was like for him．Tony was much better than before．When Tony became sad or ，Sunny was there to help him．The day Tony left the center, he had dinner with Sunny．He asked Sunny he could be so happy, even with his broken legs．Sunny and said, “It’s really quite easy．When you keep your face to the sun，the shadows fall behind．”
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