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【多选题】
与齿轮传动相比,蜗杆传动的优点有 。A.
传动平稳、噪声低
B.
传动比大
C.
传动效率高
D.
可产生自锁
E.
齿面滑动速度小
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【简答题】One experience that almost everyone fears is when _______have to speak in front of a crowd of people.
【简答题】Kalle Lasn was in a supermarket parking lot one afternoon when he had an experience that changed his life．In order to shop at the store, he needed to put money into the shopping cart to use it．Annoyed...
【单选题】Which one is not one of the reasons that experience d speakers use silence?
A.
To lengthen the presentation to the allotted time.
B.
To tells the audience that something important is coming
C.
To show the confiden ce of the speaker.
D.
To emphasize important points
【简答题】It is said that in no country other than britain can one experience four seasons a single day.
【简答题】社交名媛，也是某国际著名连锁酒店集团继承人的美国人叫什么名字?
【单选题】It is (1) matter of common experience that one can describe (2) position of (3) point in space by three numbers, or coordinates. For example, one can say that (4) point in (5) room is two meters from ...
A.
(1)a (2)the (3)a (4)a (5)a (6)a (7)the
B.
(1)the (2)the (3)a (4)the (5)a (6)a (7)the
C.
(1)a (2)a (3)a (4)the (5)a (6)a (7)the
D.
(1)the (2)the (3)a (4)a (5)the (6)a (7)the
【单选题】Click Women are beginning to experience that click! of recognition—that moment of truth that brings a gleam to our eyes and means the revolution has begun. Those clicks are coming faster, and women ar...
A.
Y
B.
N
C.
NG
【单选题】It has been said that in no country Britain can one experience four seasons in the course of a single day. [ ]
A.
better than
B.
other than
C.
rather than
D.
more than
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