问题
单项选择题
下列哪项不是液压传动的优点（）。
A.容易实现无级调速
B.成本较低
C.工作平稳
D.操作省力
答案
参考答案：B
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下列哪项不是液压传动的优点（）。
A.容易实现无级调速
B.成本较低
C.工作平稳
D.操作省力
参考答案：B
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| Mr. Smith lives in the country, but he works in an office in a big city. He 1 to work by train every morning and comes 2 the same way. One morning while Mr Smith was 3 his newspaper on the train,a man sitting behind him tapped (轻拍) him on the shoulder (肩膀). The man said 4 to him and began to talk to him. The man said, "Your life is interesting, 5 it? You take the same station at the same time 6 morning, and you always sit in the 7 seat and read the same newspaper." When Mr. Smith 8 this. he put his newspaper down, turned back and said to the man angrily, " 9 do you know all that about me!" "Well. I 10 sit in the same seat behind you." the man answered. | ||||
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