皮皮学，免费搜题
登录
搜题
【简答题】
热处理工序中，退火的目的是改善钢的组织，提高硬度，改善切削加工性能。( )
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】An old friend from abroad, whom I was expecting to stay with me, telephoned from the airport to tell me that he had arrived. I was still at the office at the time, but I had made arrangements for his ...
【单选题】p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Hiragino Kaku Gothic ProN'; color: #000000}span.s1 {font: 12.0px 'PingFang SC'}孔子周游列国长达几年？
A.
13
B.
14
C.
20
D.
22
【简答题】I was listening to the radio when you rang the bell for the first time, and that’s why I ______ you. (not hear)
【单选题】p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Heiti SC Light'; color: #000000}孔子周游列国长达几年?
A.
13
B.
14
C.
20
D.
22
【简答题】I was listening for Grace's voice, but it wasn't easy to __________ it __________ among all the others.
【单选题】Traveling through the country a couple of weeks ago on business, I was listening to the talk of the late UK writer Douglas Adams' master work 'The Hitchhiker's Guide to the Galaxy' on the radio and th...
A.
(3).
B.
(4).
C.
(3)and (4).
D.
(4)and (5).
相关题目：