皮皮学，免费搜题
登录
搜题
【多选题】
两针齿间分梳作用的条件是 ______________和______________。A.
针齿平行配置
B.
针齿交叉配置
C.
一针面针尖迎着另一针面针尖有相对运动。
D.
一针面的针尖从另一针面针齿背上越过
E.
相对运动方向顺着对方针尖
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】1450年,_______国人约翰古登堡发明了西方的第一台活字印刷机,从此,奠定了西方早期印刷招贴的开始。
【单选题】Mr Black was doing shopping at the supermarket ______ his mobile phone rang. [ ]
A.
when
B.
while
C.
after
D.
until
【简答题】While black conductors were often motivated by their own painful experiences, whites were commonly driven by religious convictions .
【简答题】某厂为大量大批单步骤生产的企业,采用品种法计算产品成本。企业设有一个基本生产车间,生产甲、乙两种产品,还设有一个辅助生产车间-运输车间。 1 、该厂 20 19 年 5 月份有关产品成本核算资料如下: 产量资料见下表(单位:件): 产品 名称 月初 在产品 本月 投产 完工产品 月末 在产品 完工率 甲 800 7200 6500 1500 60% 乙 320 3680 3200 800 40% ...
【简答题】Many people take it for granted that black is a color of bad things while white should always mean something good. This may be because, in their opinion, black is related to darkness and white to puri...
【简答题】阅读理解。 Americans wear black for mourning while Chinese wear white. Westerners think of dragons as monsters while Chinese honor them as symbols of God. Chinese civilization has often shown such polariti...
【简答题】阅读理解。 Many people take it for granted that black is a color of bad things while white should always mean something good. This may be because, in their opinion, black is related to darkness and white t...
【单选题】Mrs. Black had her left hand ______while cooking.
A.
burned
B.
burn
C.
to burn
D.
burning
【单选题】(While) smoking was associated with an attention of weight gain among black adults, (no such effect) occurred among white men or women, the latter (was) the group (most likely) to smoke for weight con...
A.
While
B.
no such effect
C.
was
D.
most likely
相关题目：
参考解析：
知识点：
题目纠错 0
发布
