皮皮学，免费搜题
登录
搜题
【判断题】
主后刀面是指切削时与工件已加工表面相对的刀具表面A.
正确
B.
错误
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】阅读理解 Customs are social habits. They have been handed down through generations among groups, social classes, etc. Customs can be described as ways of doing things. They are particularly strong in soc...
【简答题】Passage 2 “Tear ‘em apart!” “Kill the fool!” “Murder the referee ( 裁判 )!” These are common remarks one may hear at various sporting s. At the time they are made, they may seem innocent enough. Bu...
【简答题】听短文，判断正误，正确的写T，错误的写F。 ( )1. David and Jack are neighbours. ( )2. They have been friends for a long time. ( )3. Jack is a primary school student. ( )4. David wants to be a popular playe...
【单选题】— Where are the twins? — I think they _____ Hangzhou. They _____ there twice before. [ ]
A.
have been to; has gone to
B.
have gone to; have been
C.
have been to; have been to
D.
have gone to; have gone
【多选题】下列关于 IP 协议的描述正确的有 ()
A.
IP 协议只对 IP 报首进行校验和检查。
B.
IP 协议对 IP 报首和数据都进行校验和检查。
C.
IP 协议是高效，尽力交付的协议。
D.
IP 协议是可靠的协议。
【单选题】They have never been to Beijing, -?
A.
have they
B.
isn't they
C.
haven,t they
D.
aren,t they
相关题目：