【判断题】【消耗次数：1】
渐开线标准直齿圆柱齿轮传动，由于安装不准确，产生了中心距误差，但其传动比的大小仍保持不变。
①
正确
②
错误
参考答案：
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相关题目
【简答题】
渐开线标淮直齿圆柱齿轮正确啮合条件为[填空1]
【单选题】
某传动装置中有一对渐开线。标准直齿圆柱齿轮（正常齿），大齿轮已损坏，已知小齿轮的齿数z1=24，齿顶圆直径da1=78mm，中心距a=135mm，齿顶高系数ha*=1，顶隙系数c*=0.25。这对齿轮的传动比（ ）。
①
2
②
2.5
③
2.75
④
3
随机题目
【单选题】
Yourroomis _______ thanmine.
①
three time big
②
threetimesbig
③
threetimesbigger
④
biggerthreetimes
【单选题】
This book is ________ that one. But __________ than that one.
①
as difficult as ;expensive
②
as more difficult as ; more expensive
③
as difficult as ; more expensive
④
more difficult as ; as expensive
【单选题】
This box is ________ that one.
①
heavy than
②
so heavy than
③
heavier as
④
as heavy as
【单选题】
-Whats your brother like?
-He is _________.
①
adriver
②
very tall
③
myfriend
④
atschool
【单选题】
Now Mike isn’t here. He ________ Mr. Green’s. Perhaps he ________ back in a few minutes.
①
went to ; is coming
②
has gone to ; will come
③
has been to ; will be
④
is going to ; has come
【单选题】
This bright girl __________ the truth in front of the enemy.
①
didn’t say
②
couldn’t speak to
③
said
④
didn’t tell
【单选题】
Every time I _________ there, I will buy him something nice.
①
went
②
will go
③
go
④
have gone
【单选题】
The bridge which ________ last year looks really beautiful.
①
was built
②
built
③
was set up
④
had been built