问题
单项选择题
（）在传动过程中每个瞬间的传动比恒定不变。
A.齿轮传动
B.带传动
C.链传动
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
（）在传动过程中每个瞬间的传动比恒定不变。
A.齿轮传动
B.带传动
C.链传动
参考答案：A
完形填空（共20小题；每小题1.5分，  满分 30分）阅读下面短文，从短文后所给各题的四个选项（A、B、C、和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑 Once upon a time there lived an old man in a nice cottage with a large garden. The old man was seen 36 his flowers all the time. They were so well-tended that every passer-by could not but 37 for a glance. One day a young man went by the garden. He gazed at the splendid garden, 38 in admiration at the beauty of these sceneries. Then, suddenly he 39 the old gardener was blind.40 , the young man asked, “Why are you busy tending these flowers every day which you can’t 41 in fact?” The old man smiled and answered that “ I can tell you 42 reasons. First I was a 43 when I was young, and I really like this job. Second, although I can’t see these flowers, yet I can 44 them. Third，I can smell sweetness of them. As to the last one, that’s 45 . “Me? But you don’t know me,” responded the young man 46 . “Yeah, it’s 47 that I don’t know you. But I know everyone knows flowers and would never 48 them down. I know the beauty of my garden will get many people into a good 49 . In the meantime, it also 50 a chance to me to have a word with you here and to enjoy the happiness these flowers have brought us.” The old man’s 51 astonished me. The blind man grows flowers and 52 them as a link of minds so as to make 53 enjoy the sunshine in spring. Isn’t it one kind of happiness？ I believe every flower has 54 with which they can see the kindness of the man’s heart. The blind man grows flowers in his heart. Though 55 to see the beauty of blossoming, he surely can hear the voice of it, I suppose.
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