问题
单项选择题
活塞（或液压缸）的有效面积一定时，活塞（或液压缸）的运动速度取决于（）。
A.液压缸中油液的压力
B.负载阻力的大小
C.进入液压缸的油液流量
D.液压泵的输出流量
答案
参考答案：C
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活塞（或液压缸）的有效面积一定时，活塞（或液压缸）的运动速度取决于（）。
A.液压缸中油液的压力
B.负载阻力的大小
C.进入液压缸的油液流量
D.液压泵的输出流量
参考答案：C
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| Dear Meimei, Thank your for your last letter. I have been here more than a month 1 I left Shanghai for Tokyo. Now, let me tell you 2 about Tokyo. I enjoy 3 all places of great interest here very much. But it is difficult for me to find my way around the city. 4 Tokyo, only the important streets have names, and houses are numbered by age (按年代编号). 5 , when the first house was built in a place, it was Number One, and the second was Number Two. Sometimes, the second house may be over a kilometer 6 from the first house. Most of the people here are 7 to tell other persons ways. One man even drew a 8 for me when I asked him how I could 9 the station. How strange it is! Please write to 10 soon. Yours, Fangfang | ||||
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