皮皮学，免费搜题
登录
搜题
【单选题】
一对外啮合圆柱齿轮传动,传动比公式计算正确的是A.
i 12 =Z 1 /Z 2
B.
i 12 = － Z 1 /Z 2
C.
i 12 =Z 2 / Z 1
D.
i 12 = － Z 2 / Z 1
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】In many cases, hard work alone does not necessarily lead to success.
【简答题】A.To be sure B.To sum up C.In many ways D.In many cases
【单选题】听力原文：There are not enough cases for so many suits, so we have to rearrange those cases. We can fit one more suit into the case, can't we? (26)
A.
This case can hold more suits than that one.
B.
We can't find the other case of suits.
C.
Can this case fit in with the others?
D.
Can't we put another suit into the case?
【单选题】In many cases, identity theft not only causes the victims' immediate financial losses but costs them a lot to restore their reputation.
A.
Y
B.
N
C.
NG
【单选题】In many cases, without delivery confirmation, the sender knows that something was sent, but there is no confirmation ___ whether was received or when it was received.
A.
in terms of
B.
as to
C.
in this regard
【简答题】In many cases, the internally displaced are virtually those who are ______.
【单选题】History ________ many cases ________ settlers moved into areas that belonged to other people.
A.
counts in which
B.
count that
C.
counts which
D.
counting in which
【单选题】Attention is called to the fact that in many cases pipelines are not ______ and charted depths may be decreased by up to 2 meters．
A.
concealed
B.
buried
C.
existed
D.
built
【单选题】Attention is called to the fact that in many cases pipelines are not buried and charted depths may be decreased ______ up to 2 meters.
A.
with
B.
by
C.
on
D.
In
相关题目：