问题
单项选择题
当两轴距离较远，且要求传动比准确，宜采用（）
A.带传动
B.一对齿轮传动
C.轮系传动
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
当两轴距离较远，且要求传动比准确，宜采用（）
A.带传动
B.一对齿轮传动
C.轮系传动
参考答案：C
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| One night, Mary heard some big 1 noise. "Doh, Doh, …" It 2 for a few minutes. Mary went out of her bedroom to search everywhere. Her parents were sleeping and there were no 3 people in the house. Mary 4 to her bedroom. Mary heard the noise again. She thought, "Is it a cat? Mike has a cat. But cats miaow. They don't make such noise." "Maybe it's a bird 5 around and looking for a place to rest. No! That doesn't make any noise." Maybe it's the whisper of my parents. They 6 be 7 in their room. But that noise wasn't a whisper at all." Mary went to bed again but she heard the noise again. She was 8 and fell 9 her bed. Her legs were 10 and she could not climb up any more. | ||||
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